CN104462108A - Database structure object processing method and device - Google Patents
Database structure object processing method and device Download PDFInfo
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- CN104462108A CN104462108A CN201310424430.1A CN201310424430A CN104462108A CN 104462108 A CN104462108 A CN 104462108A CN 201310424430 A CN201310424430 A CN 201310424430A CN 104462108 A CN104462108 A CN 104462108A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/21—Design, administration or maintenance of databases
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/22—Indexing; Data structures therefor; Storage structures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/21—Design, administration or maintenance of databases
- G06F16/219—Managing data history or versioning
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Abstract
The invention provides a database structure object processing method and device. The method includes: establishing a read/write data dictionary file; recording database structure object information into the read/write data dictionary file. With the method, problems about poor usability, insecurity and excessive reliance of data dictionaries on the database in the relevant technology are solved, so that reliance of the data dictionaries on the database is reduced, and usability of the data dictionaries and the effect of the security are improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of database structure object processing method and device.
Background technology
Data dictionary is one of very important database object, and it is when database initialize, and one that is automatically created by database server extra object, these objects are deposited in the data file.Data dictionary have recorded the information of database initialize, the information etc. of various object.Data dictionary for database is automatically created by server and safeguards, only have server can data in Update Table dictionary, at database run duration, table in database, index and the change information depositing amendment or other object missing journey can be recorded in data dictionary in time, and user can only check the information in readable data dictionary by data dictionary view.For the data dictionary of off-line, it cannot directly be consulted.
For the data dictionary of current database, at least there is following problem:
The first, in ease for use, because the coupling with control documents is too large, the transplanting of independent data dictionary is very difficult.On the other hand, in the face of customizing the development of business, may there is very big-difference in the list structure of a different office point of business, when in the face of a large amount of office point, be often confused about list structure situation, there is very large difficulty for the investigation of problem and the exploitation of demand.And for checking the database of list structure online, the strength that developer will cost a lot of money goes to check list structure one by one.
The second, in security, during usage data storehouse, if be data definition language (DDL) (Data Definition Language, referred to as DDL) operation, because when program exception causes data file to be damaged, when particularly data dictionary damages, cannot repair, this will certainly cause the loss of data.
Therefore, the data dictionary of database is too large to the dependence of database in the related, there is ease for use difference, unsafe problem.
Summary of the invention
The invention provides a kind of database structure object processing method and device, too large to the dependence of database with the data dictionary at least solving database in correlation technique, there is ease for use difference, unsafe problem.
According to an aspect of the present invention, provide a kind of database structure object processing method, comprising: the data dictionary file creating read-write property; Database structure object information is recorded in the data dictionary file of described read-write property.
Preferably, after the data dictionary file creating described read-write property, also comprise: the data dictionary file of described read-write property is transplanted in other database with same database structure objects information.
Preferably, after in data dictionary file database structure object information being recorded in described read-write property, also comprise: the data dictionary file according to described read-write property processes described database structure object.
Preferably, carry out process according to the data dictionary file of described read-write property to described database structure object to comprise: in the mode of predetermined structure by the data dictionary files loading of described read-write property to databases; According to described predetermined structure, described database structure object is processed.
Preferably, when described predetermined structure is tree-shaped, according to described predetermined structure, process is carried out to described database structure object and comprise: with the node on described tree for operating unit processes described database object.
Preferably, described database structure object information comprise following one of at least: list structure information, table index information, storing process information.
According to a further aspect in the invention, provide a kind of database structure object handles device, comprising: creation module, for creating the data dictionary file of read-write property; Logging modle, for being recorded in database structure object information in the data dictionary file of described read-write property.
Preferably, this device also comprises: transplant module, for being transplanted in other database with same database structure objects information by the data dictionary file of described read-write property.
Preferably, this device also comprises: processing module, for processing described database structure object according to the data dictionary file of described read-write property.
Preferably, described processing module comprises: loading unit, in the mode of predetermined structure by the data dictionary files loading of described read-write property to databases; Processing unit, for processing described database structure object according to described predetermined structure.
Preferably, described processing unit comprises: process subelement, for when described predetermined structure is tree-shaped, with the node on described tree for operating unit processes described database object.
By the present invention, adopt the data dictionary file creating read-write property; Database structure object information is recorded in the data dictionary file of described read-write property, the data dictionary solving database in correlation technique is too large to the dependence of database, there is ease for use difference, unsafe problem, and then reach minimizing data dictionary to the dependence of database, improve the effect of data dictionary ease for use and security.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the process flow diagram of the database structure object processing method according to the embodiment of the present invention;
Fig. 2 is the structured flowchart of the database structure object handles device according to the embodiment of the present invention;
Fig. 3 is the preferred structure block diagram one of the database structure object handles device according to the embodiment of the present invention;
Fig. 4 is the preferred structure block diagram two of the database structure object handles device according to the embodiment of the present invention;
Fig. 5 is the preferred structure block diagram of processing module 42 in the database structure object handles device according to the embodiment of the present invention;
Fig. 6 is the preferred structure block diagram of processing unit 54 in processing module 42 in the database structure object handles device according to the embodiment of the present invention;
Fig. 7 is the structural representation be stored into according to the data dictionary of the embodiment of the present invention in internal memory;
Fig. 8 transplants process flow diagram according to the data dictionary of the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Provide a kind of database structure object processing method in the present embodiment, Fig. 1 is the process flow diagram of the database structure object processing method according to the embodiment of the present invention, and as shown in Figure 1, this flow process comprises the steps:
Step S102, creates the data dictionary file of read-write property;
Step S104, is recorded in the data dictionary file of read-write property by database structure object information, wherein, this database structure object information can comprise following one of at least: list structure information, table index information, storing process information.
Pass through above-mentioned steps, data dictionary file according to read-write property carries out record to database structure object information, the mode of binary code is adopted to carry out record to database structure object information relative to data dictionary in correlation technique, not only directly can not check amendment, and also cannot repair during data dictionary damage, and adopt the data dictionary file of read-write property to carry out record, the data dictionary solving database in correlation technique is too large to the dependence of database, there is ease for use difference, unsafe problem, not only conveniently check amendment, and also can repair when damaging, ease for use is high, security is good.
Preferably, after the data dictionary file creating read-write property, database for the data dictionary with this read-write property has the database of same database object information (such as, the database that service application is identical, or list structure, storing process that database runs are all consistent databases), the data dictionary file of above-mentioned read-write property can be transplanted in other database with same database structure objects information.By such process, substantially reduce the layoutprocedure of data dictionary, improve the efficiency of traffic engineered deployment.
After in data dictionary file database structure object information being recorded in read-write property, can also process database structure object according to the data dictionary file of read-write property.It should be noted that, to the process main manifestations of database structure object be in the data dictionary of this read-write property, have recorded database structure object information after, according to database run DDL operation renewal rewards theory process is carried out to database structure object.Implement time, namely when the data dictionary file according to read-write property processes database structure object, can first in the mode of predetermined structure by the data dictionary files loading of read-write property to databases; According to predetermined structure, database structure object is processed.Such as, when predetermined structure is tree-shaped, according to predetermined structure, process is carried out to database structure object and comprise: with the node on tree for operating unit processes database object.During employing tree process, logic is comparatively clear, also more clear and definite during operation.
Additionally provide a kind of database structure object handles device in the present embodiment, this device is used for realizing above-described embodiment and preferred implementation, has carried out repeating no more of explanation.As used below, term " module " can realize the software of predetermined function and/or the combination of hardware.Although the device described by following examples preferably realizes with software, hardware, or the realization of the combination of software and hardware also may and conceived.
Fig. 2 is the structured flowchart of the database structure object handles device according to the embodiment of the present invention, and as shown in Figure 2, this device comprises creation module 22 and logging modle 24, is described below to this device.
Creation module 22, for creating the data dictionary file of read-write property; Logging modle 24, is connected to above-mentioned creation module 22, for database structure object information being recorded in the data dictionary file of read-write property.
Fig. 3 is the preferred structure block diagram one of the database structure object handles device according to the embodiment of the present invention, and as shown in Figure 3, this device, except comprising all modules shown in Fig. 2, also comprises and transplants module 32, be described below to this transplanting module 32.
Transplant module 32, be connected to above-mentioned creation module 22, for the data dictionary file of read-write property is transplanted to there is same database structure objects information other database in.
Fig. 4 is the preferred structure block diagram two of the database structure object handles device according to the embodiment of the present invention, and as shown in Figure 4, this device, except comprising all modules shown in Fig. 2, also comprises processing module 42, is described below to this processing module 42.
Processing module 42, is connected to above-mentioned logging modle 24, for processing database structure object according to the data dictionary file of read-write property.
Fig. 5 is the preferred structure block diagram of processing module 42 in the database structure object handles device according to the embodiment of the present invention, and as shown in Figure 5, this processing module 42 comprises loading unit 52 and processing unit 54, is described below to this processing module 42.
Loading unit 52, in the mode of predetermined structure by the data dictionary files loading of read-write property to databases; Processing unit 54, is connected to above-mentioned loading unit 52, for processing database structure object according to predetermined structure.
Fig. 6 is the preferred structure block diagram of processing unit 54 in processing module 42 in the database structure object handles device according to the embodiment of the present invention, and as shown in Figure 6, this processing unit 54 comprises process subelement 62, is described below to this process subelement 62.
Process subelement 62, for when predetermined structure is tree-shaped, with the node on tree for operating unit processes database object.
By above-described embodiment and preferred implementation, data dictionary is readable writing, and data dictionary can be checked easily and revise, can the data dictionary of mis repair, improves the security of data dictionary greatly.In ease for use, data dictionary of the present invention is the impact of uncontrolled file, can be transplanted to separately in another database easily.
For the problems referred to above in correlation technique, provide a kind of memory database in the present embodiment high portable, the design of the data dictionary of high applicability.Both can check by database server the information recorded in data dictionary, can directly check and Update Table dictionary file again.Like this when database to go offline, also can check the information of data dictionaries all in database very easily, need not check in database dynamically.For the office point of identical services, directly can carry out the transplanting of data dictionary, the data dictionary of this design does not rely on database itself, is completely independently.Greatly facilitate the range of application of business like this, provide ease for use.In the present embodiment, design from the storage format of data dictionary file, illustrate in memory mechanism three in application flow memory database and operational process in internal memory.
Data dictionary is readable writing, and the information such as the table in database, index, storing process can be store according to the set form designed at the form that data dictionary stores.Such as, XML format or other.
First in xml format for an embodiment.Below the process that data dictionary carries out storing in xml format:
Wherein, each table, index, storing process with decollator <item> and < item> segmentation.This separator <item> and < content before item> be exactly all information of table, index or a storing process.Its content comprised stores according to above-mentioned form, has username information, table name (index-name or storing process name) information, No. id, DDL type, DDL content.Wherein No. id is used for unique differentiation table, index and storing process, and Table I D is associated with data page, and data page stored can only the Table I D of a corresponding table.DDL type is used for the type of expression table, index and storing process, such as 0 representative table, and 1 represents index, and 2 represent storing processs.The type of this DDL can be judged in the process of database start-up loading.Each information comprised inside total separator of foregoing description splits with a specific separator.In data dictionary file, table and the position of index information always before storing process, and start the table of establishment or storing process most before data dictionary file, and the table created below is followed after the table or storing process that create above.
Certainly, the storage of data dictionary file also can adopt alternate manner, such as, enumerates one more in the present embodiment:
&item&
&user& user
&name& tablename
&table_id& 0:1
&rank& 0
&content& create table user..tablename （ column1 int , column2 varchar （ 30 ））
&/item&
Adopt above-mentioned form also can realize the storage of data dictionary file.
Application in memory database can adopt various structures, such as, provide the comparatively simple frame mode of one in the present embodiment, Fig. 7 is the structural representation be stored into according to the data dictionary of the embodiment of the present invention in internal memory, as shown in Figure 7, the table recorded in data dictionary, index and storing process are loaded into the form in internal memory, this data dictionary structure be loaded in internal memory is tree-shaped.All tables are connected in a chained list, storing process also in this chained list and follow table after.The side at place table then followed separately in index, as an attribute of table information.
Below the application flow of data dictionary in memory database in start-up and operation is described respectively.
1, in memory database start-up course, after having loaded data, then can load the content in data dictionary, namely the table in data dictionary, index and storing process be re-created one time, be loaded in internal memory.The order loaded loaded afterwards according to the elder generation of table, index and storing process in data dictionary.In the process loaded, if create the failure of table, index or storing process, then current table, index or storing process can be lost, continue to create next table, index or storing process.After having loaded data dictionary, finally according to index situation to the data creation index in internal memory.If do not have data, then starting is an empty storehouse, and when performing establishment table, index, storing process operation, generate tree data structure successively, the table starting to create is above.
2, in the process of memory database operation, after service end creates the success of table, index or storing process, then the information of table, index or storing process is write in data dictionary according to the specific format of foregoing description and preserve.Delete list, index and storing process are also like this, after the data of table, index and correspondence or storing process delete by service end, then table corresponding in data dictionary and index or storing process are deleted.Data dictionary only just can use when start-up course and service data definitional language DDL operate.
Carry out data manipulation language (DML) (Data Manipulation Language, referred to as DML) operate time, a series of inspections such as the correctness checking a following table or storing process in this chained list can be arrived first.Namely only just can use data dictionary when doing DDL operation, otherwise the table, index and the storing process information that load in the direct shared drive of meeting.When being drop and deleting table or storing process, when namely deleting a node in chained list, in order to improve performance, reduce IO, only the table deleted or storing process can be deleted the relevant position in data dictionary, instead of all nodes are all again write one time in data dictionary.
In portable, the path of the data dictionary file in above-described embodiment and preferred implementation is configurable.Implementation method is by the path configurations of data dictionary file in the configuration file of database, can read the path that configuration file finds data dictionary file place when database starts at every turn, directly loads this data dictionary file.Because database can not read and write data when not having DDL to operate dictionary, so under the path of data dictionary that configures of the configuration file that directly data dictionary can be copied to other database when not running DDL operation.Thus realize the portable of data dictionary.This method is simple, easy to operate, greatly can improve the efficiency of engineering construction.
First for the concrete operations of business in embody rule process, validity of the present invention is described.Suppose, service application will dispose 20 databases, the list structure that these databases run, and storing process is all the same.Way is in the past the table and build storing process script and will run a time in this each of 20 of founding a capital.But the present invention, only need wherein a platform to run build table and build storing process script, after having run, under the data dictionary of the generation of this database can being copied respectively to the data dictionary path of other 19 data base configuration file configurations, these 20 databases can start-up and operation normally like this, and database can create table, index and storing process in this data dictionary automatically.Greatly can improve the efficiency of traffic engineered deployment like this, reduce engineering construction complexity, reduce the execution of a large amount of, loaded down with trivial details service scenario.Additionally provide the migration process from a database, data dictionary being transplanted to other database in the present embodiment, Fig. 8 transplants process flow diagram according to the data dictionary of the embodiment of the present invention, and as shown in Figure 8, this flow process comprises the steps:
Step S802, selects wherein one in 20 databases, run and build table script;
Step S804, after having run, according to the path copies data dictionary file of data dictionary in configuration file;
Step S806, under copying the path of corresponding data dictionary in other 19 configuration files to;
Step S808, normally starts database, and the content in start-up course in data dictionary can load automatically.
To sum up, the data dictionary processing scheme that above-described embodiment and preferred implementation provide, effectively can carry out the transplanting of data dictionary, and by checking that data dictionary file can check table, index information and storing process information easily, the ease for use of memory database can be added.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a database structure object processing method, is characterized in that, comprising:
Create the data dictionary file of read-write property;
Database structure object information is recorded in the data dictionary file of described read-write property.
2. method according to claim 1, is characterized in that, after the data dictionary file creating described read-write property, also comprises:
The data dictionary file of described read-write property is transplanted in other database with same database structure objects information.
3. method according to claim 1, is characterized in that, after in data dictionary file database structure object information being recorded in described read-write property, also comprises:
Data dictionary file according to described read-write property processes described database structure object.
4. method according to claim 3, is characterized in that, the data dictionary file according to described read-write property carries out process to described database structure object and comprises:
In the mode of predetermined structure by the data dictionary files loading of described read-write property to databases;
According to described predetermined structure, described database structure object is processed.
5. method according to claim 4, is characterized in that, when described predetermined structure is tree-shaped, carries out process comprise according to described predetermined structure to described database structure object:
With the node on described tree for operating unit processes described database object.
6. method according to any one of claim 1 to 5, is characterized in that, described database structure object information comprise following one of at least:
List structure information, table index information, storing process information.
7. a database structure object handles device, is characterized in that, comprising:
Creation module, for creating the data dictionary file of read-write property;
Logging modle, for being recorded in database structure object information in the data dictionary file of described read-write property.
8. device according to claim 7, is characterized in that, also comprises:
Transplant module, for being transplanted in other database with same database structure objects information by the data dictionary file of described read-write property.
9. device according to claim 7, is characterized in that, also comprises:
Processing module, for processing described database structure object according to the data dictionary file of described read-write property.
10. device according to claim 9, is characterized in that, described processing module comprises:
Loading unit, in the mode of predetermined structure by the data dictionary files loading of described read-write property to databases;
Processing unit, for processing described database structure object according to described predetermined structure.
11. devices according to claim 10, is characterized in that, described processing unit comprises:
Process subelement, for when described predetermined structure is tree-shaped, with the node on described tree for operating unit processes described database object.
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| CN201310424430.1A CN104462108A (en) | 2013-09-17 | 2013-09-17 | Database structure object processing method and device |
| PCT/CN2014/075947 WO2014187216A1 (en) | 2013-09-17 | 2014-04-22 | Method and device for database structure object processing |
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| CN201310424430.1A CN104462108A (en) | 2013-09-17 | 2013-09-17 | Database structure object processing method and device |
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| CN107679218A (en) * | 2017-10-17 | 2018-02-09 | 九州通医疗信息科技（武汉）有限公司 | Searching method and device based on internal memory |
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| CN105278961B (en) * | 2015-10-28 | 2018-07-13 | 广州华多网络科技有限公司 | Generate the method and system of database table structure document |
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| WO2014187216A1 (en) | 2014-11-27 |
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