CN108573034A - Data back up method, device, computer equipment and readable storage medium storing program for executing - Google Patents
Data back up method, device, computer equipment and readable storage medium storing program for executing Download PDFInfo
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- CN108573034A CN108573034A CN201810278558.4A CN201810278558A CN108573034A CN 108573034 A CN108573034 A CN 108573034A CN 201810278558 A CN201810278558 A CN 201810278558A CN 108573034 A CN108573034 A CN 108573034A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
Abstract
The present invention relates to a kind of data back up method, device, computer equipment and readable storage medium storing program for executing, belong to database technical field.The method includes：BACKUP TIME point is determined in target database, is based on BACKUP TIME point and current point in time, is determined the period to be backed up；Based on the period to be backed up, at least one data sublist is determined in source database；At least one data sublist is backed up, at least one Backup Data sublist is generated；At least one Backup Data sublist is merged, Backup Data table is generated, Backup Data table is stored into target database.The present invention is based on BACKUP TIME point and current points in time, determine the period to be backed up, and data sublist is determined in source database, generate Backup Data sublist, and then it generates Backup Data table and stores, so that only being backed up to the new data sublist being written after upper primary data backup, the back-up job to data in source database is simplified, the working efficiency of data backup is improved.
Description
Technical field
The present invention relates to database technical field, more particularly to a kind of data back up method, device, computer equipment and can
Read storage medium.
Background technology
With Internet technology application it is widely available, by Internet technology support information system carrying business more next
It is more, need the data stored also more and more, the thing followed is the rapid development of database technology.Database is to be based on
Warehouse of the foundation of database technique on computer memory device carries out tissue, storage according to data structure to data
And management.Since the data stored in database are more, and can data query persistently be carried out to database in daily application
Operation and data write operation, therefore, in order to promote the performance of data query operation and data write operation, usually by database
In be used for storing and carrying out a point list processing with the tables of data of a certain item service related data, obtain multiple data sublists, and will be multiple
Data sublist is respectively stored in multiple databases, directly right to execute data query operation and when data write operation
It is operated with the relevant a certain data sublist of current operation.During practical application, in order to prevent in database
The loss of data of storage, it usually needs the data periodically stored to total data sublist in database back up.
In the related technology, it is same due to being based on when the data stored in total data sublist in database back up
Multiple data sublists that a tables of data is split describe the data of identical dimensional, therefore, are both needed in backing up each time
The data stored in total data sublist are backed up.
In the implementation of the present invention, inventor has found that the relevant technologies have at least the following problems：
Since the data volume of the data stored based on tables of data is huge so that the quantity of the data sublist split compared with
Data sublist in more namely database is more, and backup each time is required for carrying out data sublist whole in database standby
Part, cause the back-up job to storing data in database relatively complicated, reduces the working efficiency of data backup.
Invention content
It is relatively complicated to storing the back-up job of data in data library present in the relevant technologies to overcome, reduce data
The problem of working efficiency of backup, a kind of data back up method of present invention offer, device, computer equipment and readable storage medium
Matter.
According to a first aspect of the embodiments of the present invention, a kind of data back up method is provided, the method includes：
The determination BACKUP TIME point in target database, is based on the BACKUP TIME point and current point in time, and determination waits for standby
Part period, the target database are used to store the Backup Data sublist to being obtained after the backup of data sublist, when the backup
Between point be the target database last time carry out data backup when generation time point；
Based on the period to be backed up, determine that at least one data sublist, the source database are used in source database
In the data sublist that storage receives；
At least one data sublist is backed up, at least one Backup Data sublist is generated；
At least one Backup Data sublist is merged, Backup Data table is generated, the Backup Data table is deposited
In storage to the target database.
In another embodiment, described that BACKUP TIME point is determined in target database, it is based on the BACKUP TIME point
And current point in time, before determining the period to be backed up, the method further includes：
For source database installation the first mapping plug-in unit, plug-in unit is mapped for target database installation second；
Based on the first mapping plug-in unit and the second mapping plug-in unit, the source database and the target data are established
Mapping relations between library；
The source database and the target database are restarted, so that between the source database and the target database
Mapping relations come into force.
In another embodiment, described that BACKUP TIME point is determined in target database, it is based on the BACKUP TIME point
And current point in time, before determining the period to be backed up, the method further includes：
When receiving the instruction to source database progress data backup for the first time, by the whole in the source database
Data sublist is synchronized in the target database；
The write time that the data sublist of the last one write-in is determined in the source database, the said write time is made
For the BACKUP TIME point；
The BACKUP TIME point is recorded into the target database.
In another embodiment, described to merge at least one Backup Data sublist, generate Backup Data
Table, after the Backup Data table is stored into the target database, the method further includes：
At least one Backup Data sublist is verified, by least one Backup Data sublist with it is described extremely
A few data sublist is compared；
If at least one Backup Data sublist is consistent at least one data sublist, terminate currently to flow
Journey completes the backup to the source database；
If at least one Backup Data sublist and at least one data sublist are inconsistent, by the backup
Tables of data is deleted in the target database, is re-executed and above-mentioned is carried out data backup at least one data sublist
Process.
In another embodiment, the method further includes：
Plan target is set, backup cycle is added in the plan target, the plan target, which is at least, periodically to be referred to
Enable Crontab；
When detecting that the last time interval for completing data backup of distance is consistent with the backup cycle, execute above-mentioned
The process of data backup is carried out to the source database.
According to a second aspect of the embodiments of the present invention, a kind of data backup device is provided, described device includes：
First determining module based on the BACKUP TIME point and is worked as determining BACKUP TIME point in target database
Preceding time point determines that period to be backed up, the target database are used to store the backup number to being obtained after the backup of data sublist
According to sublist, the BACKUP TIME point is the time point for the target database last time carrying out generation when data backup；
Second determining module determines at least one data for being based on the period to be backed up in source database
Table, the source database is for storing the data sublist received；
Backup module generates at least one Backup Data sublist for being backed up at least one data sublist；
Memory module, for merging at least one Backup Data sublist, generation Backup Data table will be described
Backup Data table is stored into the target database.
In another embodiment, described device further includes：
Module is installed, for mapping plug-in unit for source database installation first, second is installed for the target database
Map plug-in unit；
Module is established, for mapping plug-in unit and the second mapping plug-in unit based on described first, establishes the source database
Mapping relations between the target database；
Module is restarted, for restarting the source database and the target database, so that the source database and described
Mapping relations between target database come into force.
In another embodiment, described device further includes：
Synchronization module, for when receive for the first time to the source database carry out data backup instruction when, by the source
Total data sublist in database is synchronized in the target database；
Third determining module, when being used to determine the write-in of the data sublist of the last one write-in in the source database
Between, using the said write time as the BACKUP TIME point；
Logging modle, for recording the BACKUP TIME point into the target database.
In another embodiment, described device further includes：
Correction verification module, for being verified at least one Backup Data sublist, by least one backup number
It is compared at least one data sublist according to sublist；
Terminate module, if consistent at least one data sublist at least one Backup Data sublist,
Then terminate current process, completes the backup to the source database；
Removing module, if differed at least one Backup Data sublist and at least one data sublist
It causes, then deletes the Backup Data table in the target database, re-execute above-mentioned at least one data
Table carries out the process of data backup.
In another embodiment, described device further includes：
Setup module adds backup cycle, the plan target is extremely for plan target to be arranged in the plan target
It is periodically instruction Crontab less；
Detection module, for when the time interval and the backup cycle one for detecting the last completion data backup of distance
When cause, the above-mentioned process that data backup is carried out to the source database is executed.
According to a third aspect of the embodiments of the present invention, a kind of computer equipment, including memory, processor and storage are provided
On a memory and the computer executable instructions that can run on a processor, it is executable that the processor executes the computer
The data back up method described in above-mentioned first aspect is realized when instruction.
According to a fourth aspect of the embodiments of the present invention, a kind of readable storage medium storing program for executing is provided, is deposited on the readable storage medium storing program for executing
Instruction is contained, described instruction is executed by processor to complete the data back up method described in above-mentioned first aspect.
The technical solution that the embodiment of the present invention provides can include the following benefits：
By the determination BACKUP TIME point in target database, it is based on BACKUP TIME point and current point in time, determination waits for standby
Part period, and it is based on the period to be backed up, at least one data sublist is determined in source database, and then at least one number
It is backed up according to sublist, generates at least one Backup Data sublist, at least one Backup Data sublist is merged, generated standby
Part tables of data, Backup Data table is stored into target database so that only new to being written after upper primary data backup
Data sublist backed up, simplify the back-up job to data in source database, improve the working efficiency of data backup.
It should be understood that above general description and following detailed description is only exemplary and explanatory, not
It can the limitation present invention.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the present invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is a kind of flow chart of data back up method shown according to an exemplary embodiment；
Fig. 2A is a kind of flow chart of data back up method shown according to an exemplary embodiment；
Fig. 2 B are a kind of schematic diagrames of data back up method shown according to an exemplary embodiment；
Fig. 3 A are a kind of block diagrams of data backup device shown according to an exemplary embodiment；
Fig. 3 B are a kind of block diagrams of data backup device shown according to an exemplary embodiment；
Fig. 3 C are a kind of block diagrams of data backup device shown according to an exemplary embodiment；
Fig. 3 D are a kind of block diagrams of data backup device shown according to an exemplary embodiment；
Fig. 3 E are a kind of block diagrams of data backup device shown according to an exemplary embodiment；
Fig. 4 is a kind of block diagram of data backup device 400 shown according to an exemplary embodiment.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects being described in detail in claims, of the invention.
Fig. 1 is a kind of flow chart of data back up method shown according to an exemplary embodiment, as shown in Figure 1, the party
Method includes the following steps.
In a step 101, BACKUP TIME point is determined in target database, is based on BACKUP TIME point and current point in time,
Determine the period to be backed up, target database is used to store the Backup Data sublist to being obtained after the backup of data sublist, when backup
Between point be the target database last time carry out data backup when generation time point.
In a step 102, it is based on the period to be backed up, at least one data sublist, source data are determined in source database
Library is for storing the data sublist received.
In step 103, at least one data sublist is backed up, generates at least one Backup Data sublist.
At step 104, at least one Backup Data sublist is merged, Backup Data table is generated, by Backup Data
Table is stored into target database.
Method provided in an embodiment of the present invention is based on BACKUP TIME by determining BACKUP TIME point in target database
Point and current point in time determine the period to be backed up, and are based on the period to be backed up, and at least one number is determined in source database
It is backed up according to sublist, and then at least one data sublist, generates at least one Backup Data sublist, by least one backup
Data sublist merges, and generates Backup Data table, Backup Data table is stored into target database so that only to upper one
The new data sublist being written after secondary data backup is backed up, and is simplified the back-up job to data in source database, is carried
The high working efficiency of data backup.
In another embodiment, BACKUP TIME point is determined in target database, based on BACKUP TIME point and it is current when
Between point, before determining the period to be backed up, method further includes：
For source database installation the first mapping plug-in unit, plug-in unit is mapped for target database installation second；
Based on the first mapping plug-in unit and the second mapping plug-in unit, the mapping established between source database and target database is closed
System；
Source database and target database are restarted, so that the mapping relations between source database and target database come into force.
In another embodiment, BACKUP TIME point is determined in target database, based on BACKUP TIME point and it is current when
Between point, before determining the period to be backed up, method further includes：
When receiving the instruction to source database progress data backup for the first time, by the total data sublist in source database
It is synchronized in target database；
The write time of the data sublist of the last one write-in is determined in source database, when the write time will be used as backup
Between point；
BACKUP TIME point is recorded into target database.
In another embodiment, at least one Backup Data sublist is merged, generates Backup Data table, will backs up
After tables of data is stored into target database, method further includes：
At least one Backup Data sublist is verified, by least one Backup Data sublist and at least one data
Table is compared；
If at least one Backup Data sublist is consistent at least one data sublist, terminate current process, completion pair
The backup of source database；
If at least one Backup Data sublist and at least one data sublist are inconsistent, by Backup Data table in target
It is deleted in database, re-executes the above-mentioned process for carrying out data backup at least one data sublist.
In another embodiment, method further includes：
Plan target is set, backup cycle is added in plan target, plan target is at least periodically instruction
Crontab；
When detecting that the last time interval for completing data backup of distance is consistent with backup cycle, execute above-mentioned to source
Database carries out the process of data backup.
The alternative embodiment that any combination forms the present invention may be used, herein no longer in above-mentioned all optional technical solutions
It repeats one by one.
Fig. 2A is a kind of flow chart of data back up method shown according to an exemplary embodiment, as shown in Figure 2 A, should
Method includes the following steps.
In step 201, it is source database installation the first mapping plug-in unit, the second mapping plug-in unit is installed for target database,
Based on the first mapping plug-in unit and the second mapping plug-in unit, the mapping relations between source database and target database are established, source is restarted
Database and target database, so that the mapping relations between source database and target database come into force.
In embodiments of the present invention, in order to ensure the safety of storage data in database, the data in database are prevented
Loss causes larger loss, it usually needs is backed up to the data stored in database, and then ensures to deposit in database
The initial data of storage is lost, and is also based on Backup Data and is restored initial data.During practical application, data
When data of the library in data table memory, in order to mitigate database when receiving data query operation and data write operation
One tables of data is usually split as multiple data sublists, so as to the data query operation received to database by processing pressure
Disperseed with data write operation, based on multiple data sublists to parallel multiple data query operations and data write operation
It is responded.
It was recognized by the inventor that the purpose for carrying out data backup to database is the loss of data prevented in database, backup
Data can't undertake therefore to carry out the execution of data query operation or data write operation to data can be database
Target database for storing Backup Data there are mapping relations with it is set, is write ought subsequently to detect in database
When having entered new data sublist, new data sublist is backed up, obtains multiple Backup Data sublists, by multiple Backup Datas
Sublist is merged into a Backup Data table and is stored into target database, to reduce multiple Backup Data sublists in target data
The memory space occupied in library.
In embodiments of the present invention, it would be desirable to which the database backed up is known as source database, and source database is for storing
The data sublist received, namely for storing original data sublist；The database of data is known as target after storage is backed up
Database, target database are used to store the Backup Data table to being obtained after the backup of data sublist, namely for storing backup
Data sublist.
It is first the first mapping of source database installation when establishing the mapping relations between source database and target database
Plug-in unit, for target database installation the second mapping plug-in unit, the first mapping plug-in unit can be rpl_semi_sync_slave (backed stampers
Formula subordinate) plug-in unit, the second mapping plug-in unit can be rpl_semi_sync_master (replication mode control) plug-in unit；Subsequently, based on
First mapping plug-in unit and the second mapping plug-in unit, establish the mapping relations between source database and target database.Wherein, based on
First mapping plug-in unit and the second mapping plug-in unit be when establishing the mapping relations between source database and target database, can be based on the
One mapping plug-in unit and the second mapping plug-in unit, change the configuration parameter of source database and target database so that source database and mesh
Mark database opens binlog (change record) function, and starting log pattern ROW (Read Only Memory, it is read-only to deposit
Reservoir), and then source database and target database are mapped, reflecting between source database and target database is established in realization
Penetrate relationship.It should be noted that during practical application, it, can when the configuration parameter to target database is modified
Only to open the binlog functions of target database, do not start the logging mode ROW of target database, so simplify to data into
The process of row backup, the embodiment of the present invention is to establishing the mode of mapping relations between source database and target database without tool
Body limits.
After completing the foundation of mapping relations between source database and target database, due to source database and number of targets
It is based on the foundation for realizing mapping relations to the modification of configuration parameter according to library, therefore, it is necessary to restart source database and target data
Library, so that source database and target database realize source database and target database based on the configuration parameter operation after change
Between mapping relations come into force.
It in step 202, will be in source database when receiving the instruction to source database progress data backup for the first time
Total data sublist is synchronized in target database.
In embodiments of the present invention, when receiving the instruction to source database progress data backup for the first time, due to current
In target database and there is no the data after any backup namely the total data in source database not to be backed up, because
Total data sublist in source database, can be synchronized in target database and back up by this.Wherein, by total data
It when sublist is synchronized to target database, needs to replicate total data sublist, generates multiple Backup Data sublists, it will be multiple
Backup Data sublist merges into a tables of data, and the tables of data of generation is stored to target database, and then completes to source data
The backup of total data in library.
In step 203, the write time that the data sublist of the last one write-in is determined in source database, when by being written
Between be used as BACKUP TIME point, BACKUP TIME point is recorded into target database.
In embodiments of the present invention, in order to next time to source database carry out data backup when, no longer to having carried out
The data sublist that backup is completed carries out second and backs up, and needs the data sublist that the last one write-in is determined in source database
Write time, namely determine that this backup procedure has backed up the data sublist by the end of which moment write-in, so as to next
It is secondary when needing to back up source database, it can be backed up since the data sublist not yet backed up.
In source database is determined after the write time of the last one data sublist being written, just the write time is made
For BACKUP TIME point, BACKUP TIME point is recorded in target database, it is next time standby to source database progress data to make
Part when, using since BACKUP TIME point be written source database at least one data sublist as the data that will be backed up into
Row backup, avoids the Secondary Backup to data sublist, saves mass data input/output resource, simplify data backup
Flow.Wherein, BACKUP TIME point can use master_log_pos (iog location point) to indicate.
In step 204, BACKUP TIME point is determined in target database, is based on BACKUP TIME point and current point in time,
Determine the period to be backed up.
In embodiments of the present invention, when not for the first time by the data backup to target database in source database when, be
Determination needs which data sublist backed up, avoid the backup of certain data sublists is multiple, need first in target database really
Determine BACKUP TIME point；It is then based on BACKUP TIME point and current point in time, determines the period to be backed up, so as to subsequently based on standby
Part period determines the data sublist backed up in source database.Wherein, current point in time can use Master_
Log_File is indicated, during practical application, since current point in time is to determine source database in upper primary progress
Which data is also written with after data backup, and hence it is also possible to when needing to back up source database, in source database
The time of the data sublist write-in of the last one write-in is obtained as current point in time, the embodiment of the present invention is to determining current time
The mode of point is without specifically limiting.
It, can will be between BACKUP TIME point and current point in time after BACKUP TIME point and current point in time is determined
Time interval is as the period to be backed up, so as at least one data sublist that source database is written within the period to be backed up
It is backed up.
During practical application, data backup entrance can be provided in source database terminal mounted, works as inspection
When measuring user and triggering the data backup entrance, then above-mentioned determining BACKUP TIME point is executed, and based on BACKUP TIME point and current
Time point determines the process of period to be backed up.It should be noted that in order to avoid not receiving the backup of user's request data
In the case of, cause not carry out data backup to source database for a long time, so that needing to carry out in primary data backup
Plan target can also be arranged in source database terminal mounted in the overabundance of data of backup, and adds in plan target standby
Part period, in this way, when terminal detects the last time interval and backup cycle for completing data backup to source database of distance
When consistent, then above-mentioned determining BACKUP TIME point is executed, and the period to be backed up is determined based on BACKUP TIME point and current point in time
Process.Wherein, plan target is at least Crontab (periodically instruction).The embodiment of the present invention to carry out data backup when
Machine is without specifically limiting.
In step 205, it is based on the period to be backed up, at least one data sublist is determined in source database, at least
One data sublist is backed up, and at least one Backup Data sublist is generated, and at least one Backup Data sublist is merged,
Backup Data table is generated, Backup Data table is stored into target database.
In embodiments of the present invention, after generating the period to be backed up, can be determined in source database wait for it is standby
At least one of write-in source database data sublist in part period, and at least one data sublist is backed up, it generates
At least one Backup Data sublist consistent at least one data sublist, at least one backup sublist is stored to target data
In library, to realize the backup to data in source database.
When storing at least one Backup Data sublist into target database, since target database does not carry pair
The data query operation and data write operation of data carry out data query operation and data write operation without considering to data
Convenience therefore at least one Backup Data sublist stored in target database can be merged into one whole backup number
It is stored according to table.For example, with reference to Fig. 2 B, the source database in Fig. 2 B includes 3 data sublists, respectively userid%100
=1, userid%100=2, userid%100=3, when by userid%100=1, userid%100=2, userid%
After 100=3 backs up to target database by source database, 3 sublists are merged into 1 tables of data 1 and are stored.
It should be noted that since may to have carried out data before carrying out this data backup standby for target database
Part so that Backup Data table is stored in target database, in this way, in this at least one Backup Data sublist of generation
Afterwards, on the one hand, existing old Backup Data table can will merge before at least one Backup Data sublist, and generate new backup number
According to table, old Backup Data table is replaced using new Backup Data table, to complete the backup at least one data sublist；
On the other hand, it is also based at least one backup sublist and generates new Backup Data table, together by legacy data table and new data table
It is stored in target database, legacy data table is independent of each other with new data table.The embodiment of the present invention is to storing at least one data
The mode of sublist is without specifically limiting.
In step 206, at least one Backup Data sublist is verified, by least one Backup Data sublist and extremely
A few data sublist is compared, if at least one Backup Data sublist is consistent at least one data sublist, executes
Following step 207；If at least one Backup Data sublist and at least one data sublist are inconsistent, following step is executed
208。
In embodiments of the present invention, when completing to merge at least one Backup Data sublist, Backup Data table is generated,
And after Backup Data table is stored into target database, it is contemplated that when generating at least one Backup Data sublist, network can
Can have delay or the data sublist quantity backed up is needed excessively to back up may back up interruption, and then lead to generate at least one
The data that a Backup Data sublist includes are complete, therefore, after storing Backup Data table into target database, need pair
At least one Backup Data sublist is verified, and at least one Backup Data sublist and at least one data sublist are compared
It is right, if at least one Backup Data sublist is consistent at least one data sublist, then it represents that is be currently generated is at least one standby
The data that part data sublist includes are complete, can terminate current flow, complete the data backup to source database,
Namely execute following step 207；If at least one Backup Data sublist and at least one data sublist are inconsistent, then it represents that when
Previous existence at least one Backup Data sublist data for including be incomplete, in the mistake for generating at least one backup sublist
The loss that data may be resulted in journey is given birth to again therefore, it is necessary to execute above-mentioned steps 204 again to the process in step 206
The Backup Data sublist of Cheng Xin, and new Backup Data sublist is verified again, namely execute following step 208.
It should be noted that in embodiments of the present invention, when completing to merge at least one Backup Data sublist, giving birth to
After Backup Data table, just at least one Backup Data sublist is verified；And during practical application, it can be in life
After at least one Backup Data sublist, at once to comparing at least one Backup Data sublist and at least one data sublist
It is right, at least one Backup Data sublist of generation is verified, and after verifying successfully, just at least one Backup Data
Table merges, and generates Backup Data table and is stored.The embodiment of the present invention is to carrying out the opportunity of data check without specific
It limits.
In step 207, if at least one Backup Data sublist is consistent at least one data sublist, terminate current
Flow completes the backup to source database.
In embodiments of the present invention, if at least one Backup Data sublist is consistent at least one data sublist, table
Show that the data that at least one Backup Data sublist includes are complete, in the process backed up at least one data sublist
In there is no theres is a phenomenon where loss of data, therefore, current process, data backup of the completion to source database can be terminated.
It in a step 208, will at least if at least one Backup Data sublist and at least one data sublist are inconsistent
One Backup Data sublist is deleted in target database, re-executes above-mentioned steps 204 to the process of step 206.
In embodiments of the present invention, if at least one Backup Data sublist and at least one data sublist are inconsistent,
Indicate that the data that at least one Backup Data sublist includes are incomplete, what is backed up at least one data sublist
Therefore the phenomenon that may have occurred loss of data in the process can delete the Backup Data table being currently generated, again at least
One data sublist is backed up, and re-executes above-mentioned steps 204 to the process of step 207.Wherein, if generating at least
Data check has just been carried out after one Backup Data sublist, has not yet generated Backup Data table, then by least one Backup Data
Table is deleted.
Method provided in an embodiment of the present invention is based on BACKUP TIME by determining BACKUP TIME point in target database
Point and current point in time determine the period to be backed up, and are based on the period to be backed up, and at least one number is determined in source database
It is backed up according to sublist, and then at least one data sublist, generates at least one Backup Data sublist, by least one backup
Data sublist merges, and generates Backup Data table, Backup Data table is stored into target database so that only to upper one
The new data sublist being written after secondary data backup is backed up, and is simplified the back-up job to data in source database, is carried
The high working efficiency of data backup.
Fig. 3 A are a kind of block diagrams of data backup device shown according to an exemplary embodiment.With reference to Fig. 3 A, the device
Including the first determining module 301, the second determining module 302, backup module 303 and memory module 304.
First determining module 301 based on BACKUP TIME point and is worked as determining BACKUP TIME point in target database
Preceding time point determines that period to be backed up, target database are used to store Backup Data to being obtained after the backup of data sublist
Table, BACKUP TIME point are the time point for the target database last time carrying out generation when data backup；
Second determining module 302 determines at least one data for being based on the period to be backed up in source database
Table, source database is for storing the data sublist received；
The backup module 303 generates at least one Backup Data for being backed up at least one data sublist
Table；
The memory module 304, for merging at least one Backup Data sublist, generation Backup Data table will be standby
Part tables of data is stored into target database.
Device provided in an embodiment of the present invention is based on BACKUP TIME by determining BACKUP TIME point in target database
Point and current point in time determine the period to be backed up, and are based on the period to be backed up, and at least one number is determined in source database
It is backed up according to sublist, and then at least one data sublist, generates at least one Backup Data sublist, by least one backup
Data sublist merges, and generates Backup Data table, Backup Data table is stored into target database so that only to upper one
The new data sublist being written after secondary data backup is backed up, and is simplified the back-up job to data in source database, is carried
The high working efficiency of data backup.
In another embodiment, referring to Fig. 3 B, which further includes installation module 305, establishes module 306 and restarts mould
Block 307.
The installation module 305, for mapping plug-in unit for source database installation first, for the second mapping of target database installation
Plug-in unit；
This establishes module 306, for based on the first mapping plug-in unit and the second mapping plug-in unit, establishing source database and number of targets
According to the mapping relations between library；
This restarts module 307, for restarting source database and target database so that source database and target database it
Between mapping relations come into force.
In another embodiment, referring to Fig. 3 C, which further includes synchronization module 308, third determining module 309 and note
Record module 310.
The synchronization module 308, for when receive for the first time to source database carry out data backup instruction when, by source data
Total data sublist in library is synchronized in target database；
The third determining module 309, when being used to determine the write-in of the data sublist of the last one write-in in source database
Between, will the write time as BACKUP TIME point；
The logging modle 310, for recording BACKUP TIME point into target database.
In another embodiment, referring to Fig. 3 D, which further includes correction verification module 311, terminate module 312 and deletion mould
Block 313.
The correction verification module 311, for being verified at least one Backup Data sublist, by least one Backup Data
Table is compared at least one data sublist；
If the terminate module 312 is tied consistent at least one data sublist at least one Backup Data sublist
Beam current process completes the backup to source database；
The removing module 313, if inconsistent at least one Backup Data sublist and at least one data sublist,
Backup Data table is deleted in target database, re-executes the above-mentioned mistake for carrying out data backup at least one data sublist
Journey.
In another embodiment, referring to Fig. 3 E, which further includes setup module 314 and detection module 315.
The setup module 314 adds backup cycle, plan target is at least for plan target to be arranged in plan target
For periodically instruction Crontab；
The detection module 315, for when the time interval and backup cycle for detecting the last completion data backup of distance
When consistent, the above-mentioned process that data backup is carried out to source database is executed.
About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method
Embodiment in be described in detail, explanation will be not set forth in detail herein.
Fig. 4 is a kind of block diagram of data backup device 400 shown according to an exemplary embodiment.For example, device 400 can
To be mobile phone, computer, digital broadcast terminal, messaging devices, game console, tablet device, Medical Devices are good for
Body equipment, personal digital assistant etc..
With reference to Fig. 4, device 400 may include following one or more components：Processing component 402, memory 404, power supply
Component 406, multimedia component 408, audio component 410, the interface 412 of I/O (Input/Output, input/output), sensor
Component 414 and communication component 416.
The integrated operation of 402 usual control device 400 of processing component, such as with display, call, data communication, phase
Machine operates and record operates associated operation.Processing component 402 may include that one or more processors 420 refer to execute
It enables, to perform all or part of the steps of the methods described above.In addition, processing component 402 may include one or more modules, just
Interaction between processing component 402 and other assemblies.For example, processing component 402 may include multi-media module, it is more to facilitate
Interaction between media component 408 and processing component 402.
Memory 404 is configured as storing various types of data to support the operation in device 400.These data are shown
Example includes instruction for any application program or method that are operated on device 400, contact data, and telephone book data disappears
Breath, picture, video etc..Memory 404 can be by any kind of volatibility or non-volatile memory device or their group
It closes and realizes, such as SRAM (Static Random Access Memory, static RAM), EEPROM
(Electrically-Erasable Programmable Read-Only Memory, the read-only storage of electrically erasable
Device), EPROM (Erasable Programmable Read Only Memory, Erasable Programmable Read Only Memory EPROM), PROM
(Programmable Read-Only Memory, programmable read only memory), and ROM (Read-Only Memory, it is read-only to deposit
Reservoir), magnetic memory, flash memory, disk or CD.
Power supply module 406 provides electric power for the various assemblies of device 400.Power supply module 406 may include power management system
System, one or more power supplys and other generated with for device 400, management and the associated component of distribution electric power.
Multimedia component 408 is included in the screen of one output interface of offer between described device 400 and user.One
In a little embodiments, screen may include LCD (Liquid Crystal Display, liquid crystal display) and TP (Touch
Panel, touch panel).If screen includes touch panel, screen may be implemented as touch screen, from the user to receive
Input signal.Touch panel includes one or more touch sensors to sense the gesture on touch, slide, and touch panel.Institute
The boundary of a touch or slide action can not only be sensed by stating touch sensor, but also be detected and the touch or slide phase
The duration and pressure of pass.In some embodiments, multimedia component 408 includes that a front camera and/or postposition are taken the photograph
As head.When device 400 is in operation mode, when such as screening-mode or video mode, front camera and/or rear camera can
With the multi-medium data outside reception.Each front camera and rear camera can be a fixed optical lens systems
Or there are focusing and optical zoom capabilities.
Audio component 410 is configured as output and/or input audio signal.For example, audio component 410 includes a MIC
(Microphone, microphone), when device 400 is in operation mode, such as call model, logging mode and speech recognition mode
When, microphone is configured as receiving external audio signal.The received audio signal can be further stored in memory 404
Or it is sent via communication component 416.In some embodiments, audio component 410 further includes a loud speaker, for exporting audio
Signal.
I/O interfaces 412 provide interface between processing component 402 and peripheral interface module, and above-mentioned peripheral interface module can
To be keyboard, click wheel, button etc..These buttons may include but be not limited to：Home button, volume button, start button and lock
Determine button.
Sensor module 414 includes one or more sensors, and the state for providing various aspects for device 400 is commented
Estimate.For example, sensor module 414 can detect the state that opens/closes of equipment 400, the relative positioning of component, such as component
For the display and keypad of device 400, sensor module 414 can be with the position of 400 1 components of detection device 400 or device
Set change, the existence or non-existence that user contacts with device 400, the temperature of 400 orientation of device or acceleration/deceleration and device 400
Variation.Sensor module 414 may include proximity sensor, be configured to detect without any physical contact near
The presence of object.Sensor module 414 can also include optical sensor, such as CMOS (Complementary Metal Oxide
Semiconductor, complementary metal oxide) or CCD (Charge-coupled Device, charge coupled cell) image biography
Sensor, for being used in imaging applications.In some embodiments, which can also include acceleration sensing
Device, gyro sensor, Magnetic Sensor, pressure sensor or temperature sensor.
Communication component 416 is configured to facilitate the communication of wired or wireless way between device 400 and other equipment.Device
400 can access the wireless network based on communication standard, such as WiFi, 2G or 3G or combination thereof.In an exemplary implementation
In example, communication component 416 receives broadcast singal or broadcast related information from external broadcasting management system via broadcast channel.
In one exemplary embodiment, the communication component 416 further includes that (Near Field Communication, near field are logical by NFC
Letter) module, to promote short range communication.For example, RFID (Radio Frequency can be based in NFC module
Identification, radio frequency identification) technology, IrDA (Infra-red Data Association, Infrared Data Association) skill
Art, UWB (Ultra Wideband, ultra wide band) technology, BT (Bluetooth, bluetooth) technologies and other technologies are realized.
In the exemplary embodiment, device 400 can be by one or more ASIC (Application Specific
Integrated Circuit, application specific integrated circuit), DSP (Digital signal Processor, at digital signal
Manage device), DSPD (Digital signal Processor Device, digital signal processing appts), PLD (Programmable
Logic Device, programmable logic device), FPGA) (Field Programmable Gate Array, field programmable gate
Array), controller, microcontroller, microprocessor or other electronic components realize, for executing above-mentioned data back up method.
In the exemplary embodiment, it includes the non-transitorycomputer readable storage medium instructed, example to additionally provide a kind of
Such as include the memory 404 of instruction, above-metioned instruction can be executed by the processor 420 of device 400 to complete the above method.For example,
The non-transitorycomputer readable storage medium can be ROM, RAM (Random Access Memory, random access memory
Device), CD-ROM (Compact Disc Read-Only Memory, compact disc read-only memory), tape, floppy disk and light data deposit
Store up equipment etc..
A kind of computer equipment, including memory, processor and storage can be run on a memory and on a processor
Computer executable instructions, the processor realize above-mentioned data back up method when executing the computer executable instructions.
A kind of readable storage medium storing program for executing, when the instruction in the storage medium is executed by the processor of data backup device,
So that data backup device is able to carry out above-mentioned data back up method.
A1, a kind of data back up method, which is characterized in that the method includes：
The determination BACKUP TIME point in target database, is based on the BACKUP TIME point and current point in time, and determination waits for standby
Part period, the target database are used to store the Backup Data sublist to being obtained after the backup of data sublist, when the backup
Between point be the target database last time carry out data backup when generation time point；
Based on the period to be backed up, determine that at least one data sublist, the source database are used in source database
In the data sublist that storage receives；
At least one data sublist is backed up, at least one Backup Data sublist is generated；
At least one Backup Data sublist is merged, Backup Data table is generated, the Backup Data table is deposited
In storage to the target database.
A2, according to the method described in claim 1, it is characterized in that, it is described in target database determine BACKUP TIME
Point is based on the BACKUP TIME point and current point in time, and before determining the period to be backed up, the method further includes：
For source database installation the first mapping plug-in unit, plug-in unit is mapped for target database installation second；
Based on the first mapping plug-in unit and the second mapping plug-in unit, the source database and the target data are established
Mapping relations between library；
The source database and the target database are restarted, so that between the source database and the target database
Mapping relations come into force.
A3, according to the method described in claim 1, it is characterized in that, it is described in target database determine BACKUP TIME
Point is based on the BACKUP TIME point and current point in time, and before determining the period to be backed up, the method further includes：
When receiving the instruction to source database progress data backup for the first time, by the whole in the source database
Data sublist is synchronized in the target database；
The write time that the data sublist of the last one write-in is determined in the source database, the said write time is made
For the BACKUP TIME point；
The BACKUP TIME point is recorded into the target database.
A4, according to the method described in claim 1, it is characterized in that, described by least one Backup Data sublist
It merges, generates Backup Data table, after the Backup Data table is stored into the target database, the method is also
Including：
At least one Backup Data sublist is verified, by least one Backup Data sublist with it is described extremely
A few data sublist is compared；
If at least one Backup Data sublist is consistent at least one data sublist, terminate currently to flow
Journey completes the backup to the source database；
If at least one Backup Data sublist and at least one data sublist are inconsistent, by the backup
Tables of data is deleted in the target database, is re-executed and above-mentioned is carried out data backup at least one data sublist
Process.
A5, according to the method described in claim 1, it is characterized in that, the method further includes：
Plan target is set, backup cycle is added in the plan target, the plan target, which is at least, periodically to be referred to
Enable Crontab；
When detecting that the last time interval for completing data backup of distance is consistent with the backup cycle, execute above-mentioned
The process of data backup is carried out to the source database.
A6, a kind of data backup device, which is characterized in that described device includes：
First determining module based on the BACKUP TIME point and is worked as determining BACKUP TIME point in target database
Preceding time point determines that period to be backed up, the target database are used to store the backup number to being obtained after the backup of data sublist
According to sublist, the BACKUP TIME point is the time point for the target database last time carrying out generation when data backup；
Second determining module determines at least one data for being based on the period to be backed up in source database
Table, the source database is for storing the data sublist received；
Backup module generates at least one Backup Data sublist for being backed up at least one data sublist；
Memory module, for merging at least one Backup Data sublist, generation Backup Data table will be described
Backup Data table is stored into the target database.
A7, device according to claim 6, which is characterized in that described device further includes：
Module is installed, for mapping plug-in unit for source database installation first, second is installed for the target database
Map plug-in unit；
Module is established, for mapping plug-in unit and the second mapping plug-in unit based on described first, establishes the source database
Mapping relations between the target database；
Module is restarted, for restarting the source database and the target database, so that the source database and described
Mapping relations between target database come into force.
A8, device according to claim 6, which is characterized in that described device further includes：
Synchronization module, for when receive for the first time to the source database carry out data backup instruction when, by the source
Total data sublist in database is synchronized in the target database；
Third determining module, when being used to determine the write-in of the data sublist of the last one write-in in the source database
Between, using the said write time as the BACKUP TIME point；
Logging modle, for recording the BACKUP TIME point into the target database.
A9, device according to claim 6, which is characterized in that described device further includes：
Correction verification module, for being verified at least one Backup Data sublist, by least one backup number
It is compared at least one data sublist according to sublist；
Terminate module, if consistent at least one data sublist at least one Backup Data sublist,
Then terminate current process, completes the backup to the source database；
Removing module, if differed at least one Backup Data sublist and at least one data sublist
It causes, then deletes the Backup Data table in the target database, re-execute above-mentioned at least one data
Table carries out the process of data backup.
A10, device according to claim 6, which is characterized in that described device further includes：
Setup module adds backup cycle, the plan target is extremely for plan target to be arranged in the plan target
It is periodically instruction Crontab less；
Detection module, for when the time interval and the backup cycle one for detecting the last completion data backup of distance
When cause, the above-mentioned process that data backup is carried out to the source database is executed.
A11, a kind of computer equipment, including memory, processor and storage can transport on a memory and on a processor
Capable computer executable instructions, which is characterized in that the processor realizes right when executing the computer executable instructions
It is required that 1-5 any one of them data back up method.
A12, a kind of readable storage medium storing program for executing, which is characterized in that instruction, described instruction are stored on the readable storage medium storing program for executing
It is executed by processor to complete claim 1-5 any one of them data back up method.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the present invention
Its embodiment.This application is intended to cover the present invention any variations, uses, or adaptations, these modifications, purposes or
Person's adaptive change follows the general principle of the present invention and includes the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the invention is not limited in the precision architectures for being described above and being shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (10)
1. a kind of data back up method, which is characterized in that the method includes：
BACKUP TIME point is determined in target database, the BACKUP TIME point and current point in time is based on, when determining to be backed up
Between section, the target database is used to store to obtained Backup Data sublist, the BACKUP TIME point after the backup of data sublist
For the target database last time carry out data backup when generation time point；
Based on the period to be backed up, at least one data sublist is determined in source database, the source database is for depositing
Store up the data sublist received；
At least one data sublist is backed up, at least one Backup Data sublist is generated；
At least one Backup Data sublist is merged, generate Backup Data table, by the Backup Data table store to
In the target database.
2. according to the method described in claim 1, it is characterized in that, described determine BACKUP TIME point, base in target database
In the BACKUP TIME point and current point in time, before determining the period to be backed up, the method further includes：
For source database installation the first mapping plug-in unit, plug-in unit is mapped for target database installation second；
Based on the first mapping plug-in unit and the second mapping plug-in unit, establish the source database and the target database it
Between mapping relations；
The source database and the target database are restarted, so that reflecting between the source database and the target database
The relationship of penetrating comes into force.
3. according to the method described in claim 1, it is characterized in that, described determine BACKUP TIME point, base in target database
In the BACKUP TIME point and current point in time, before determining the period to be backed up, the method further includes：
When receiving the instruction to source database progress data backup for the first time, by the total data in the source database
Sublist is synchronized in the target database；
The write time that the data sublist of the last one write-in is determined in the source database, using the said write time as institute
State BACKUP TIME point；
The BACKUP TIME point is recorded into the target database.
4. according to the method described in claim 1, it is characterized in that, described close at least one Backup Data sublist
And Backup Data table is generated, after the Backup Data table is stored into the target database, the method further includes：
At least one Backup Data sublist is verified, by least one Backup Data sublist and described at least one
A data sublist is compared；
If at least one Backup Data sublist is consistent at least one data sublist, terminate current process, it is complete
The backup of the pairs of source database；
If at least one Backup Data sublist and at least one data sublist are inconsistent, by the Backup Data
Table is deleted in the target database, re-executes the above-mentioned mistake that data backup is carried out at least one data sublist
Journey.
5. according to the method described in claim 1, it is characterized in that, the method further includes：
Plan target is set, backup cycle is added in the plan target, the plan target is at least periodically instruction
Crontab；
When detecting that the last time interval for completing data backup of distance is consistent with the backup cycle, execute above-mentioned to institute
State the process that source database carries out data backup.
6. a kind of data backup device, which is characterized in that described device includes：
First determining module, for determining BACKUP TIME point in target database, based on the BACKUP TIME point and it is current when
Between point, determine the period to be backed up, the target database is used to store data sublist is backed up after obtained Backup Data it is sub
Table, the BACKUP TIME point are the time point for the target database last time carrying out generation when data backup；
Second determining module determines at least one data sublist, institute for being based on the period to be backed up in source database
Source database is stated for storing the data sublist received；
Backup module generates at least one Backup Data sublist for being backed up at least one data sublist；
Memory module generates Backup Data table, by the backup for merging at least one Backup Data sublist
Tables of data is stored into the target database.
7. device according to claim 6, which is characterized in that described device further includes：
Module is installed, for mapping plug-in unit for source database installation first, for the second mapping of target database installation
Plug-in unit；
Module is established, for mapping plug-in unit and the second mapping plug-in unit based on described first, establishes the source database and institute
State the mapping relations between target database；
Module is restarted, for restarting the source database and the target database, so that the source database and the target
Mapping relations between database come into force.
8. device according to claim 6, which is characterized in that described device further includes：
Synchronization module, for when receive for the first time to the source database carry out data backup instruction when, by the source data
Total data sublist in library is synchronized in the target database；
Third determining module, the write time of the data sublist for determining the last one write-in in the source database, will
The said write time is as the BACKUP TIME point；
Logging modle, for recording the BACKUP TIME point into the target database.
9. a kind of computer equipment, including memory, processor and storage are on a memory and the meter that can run on a processor
Calculation machine executable instruction, which is characterized in that the processor realizes claim 1-5 when executing the computer executable instructions
Any one of them data back up method.
10. a kind of readable storage medium storing program for executing, which is characterized in that be stored with instruction on the readable storage medium storing program for executing, described instruction is located
Device is managed to execute to complete claim 1-5 any one of them data back up method.
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