CN103886091A - Database synchronization method based on record marks - Google Patents
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- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
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Abstract
A database synchronization method based on record marks can effectively achieve data synchronization among different databases, does not depend on specific database products, and is more flexible to achieve, high in controllable degree and capable of being suitable for data synchronization among the different databases. The corresponding synchronization marks are added to a database A and a database B in the same service data table, and a database operation module synchronously operates record data in the database A and the database B through the synchronization marks.
Description
Technical field
The present invention relates to database technical field, be specially a kind of database synchronization method based on recording mark.
Background technology
Database storage relational data, is that data are preserved and the important infrastructure utilizing, and its significant data needs multiple spot to preserve, and causes the risk of loss of data to reduce Single Point of Faliure; A lot of enterprises are deployed in infosystem on the IT infrastructure that multiple cloud computing service business provide, backup each other, reduce infosystem risk out of service, this deployment, need between different source data storehouse, carry out data synchronous, the features such as the specification of same database product, technical manual, interface are identical, and corresponding method of data synchronization and instrument are provided, and it is comparatively easy that the synchronous deployment of data is implemented; But characteristic difference between disparate databases product,, having there are a lot of databases based on cloud in the especially development of cloud computing, needs blanket method of data synchronization, between heterogeneous database, carry out reliable data synchronous, to meet the hot standby demand of data of information system.
Summary of the invention
For the problems referred to above, the invention provides a kind of database synchronization method based on recording mark, the data synchronization problems of can efficient solution determining between disparate databases, do not rely on concrete database product, in realization more flexibly, controllable degree is high, applicable between different database products synchrodata.
A kind of database synchronization method based on recording mark, its technical scheme is such: it is characterized in that: database A, database B add corresponding sync mark in a business datum table, database manipulation module is by the record data in described sync mark synchronous operating data storehouse A, database B, and the method for data synchronization step of described database A, database B is:
The first, described database A, B be normally operation all:
(1), described database manipulation module is carried out the operator scheme of two database normal states, be ready to record data, using the mark of described record as sync mark, described sync mark is set to " synchronous " state, in described database A, revise described record, if successfully amendment, execution step (2), otherwise execution step (3);
(2), in described database B, revise described record, the sync mark of corresponding record in described database B is still set to " synchronous " state, if described step (1) is carried out in successfully amendment, otherwise execution step (4);
(3), the sync mark of described record is set to " needing synchronous " state, revises described record and corresponding sync mark in described database B, if successfully amendment; execution step (5), otherwise execution step (6);
(4), the sync mark of recording described in described database A being set is " needing synchronous " state, execution step (5);
(5), write down the running status of described database A, B, described database manipulation module is transitted towards individual data storehouse normal state pattern;
(6), described database A, B all can not modify, described database A, B break down, and get rid of after described database A, B fault, carry out described step (1);
The second, individual data storehouse is normally moved, and supposes that described database A normally moves, described database B fault:
(1), described database manipulation module is carried out the operator scheme of individual data storehouse normal state;
(2), be ready to record data, using the mark of described record as sync mark, described sync mark is set to " need synchronous " state, in described database A, revise described record, if successfully amendment; execution step (3), otherwise execution step (4);
(3), check whether described database B recovers normally, if recovered normally, execution step (5), otherwise carries out described step (1);
(4), described database A, B all can not modify, described database A, B break down, and get rid of after described database A, B fault execution step (5);
(5), described database manipulation module is transitted towards database synchronization morphotype formula;
The 3rd, described database synchronization morphotype formula, the described database A that is supposition normally moves, and described database B normally moves from fault recovery, has up-to-date record need to be synchronized in described database B in described database A:
(1), described database manipulation module carries out the operator scheme of database synchronization state, and data query service is externally only provided;
(2), described database A normally moves, taking described database A as benchmark, scan the record that the sync mark in described database A is " needing synchronous " state, and synchronously revise record corresponding to described database B, in described database A, B, the sync mark of respective record is set to " synchronous " state, if success, execution step (3); Otherwise execution step (4);
(3), described database manipulation module transits to the operator scheme of two database normal states;
(4), the database of abnormal running is fixed a breakdown, carry out described step (2).
It is further characterized in that: the operation of the amendment record of described database A, B be to record newly-increased, delete, upgrade operation, in the time that described database A, B all normally move, the sync mark of corresponding record in described database A, B is set to " synchronous " state;
Amendment record operation while only having a database normally to move:
(1), during for newly-increased record operation, the sync mark that the database of normal operation is set is " needing synchronous " state, type be " increasing newly ", and interpolation is recorded in the database of normal operation;
(2) while, operation for deletion record, if the sync mark of the database of normal operation is " needing synchronous " state, and type is " increasing newly ", described deletion record operates direct deletion record, otherwise the sync mark of the database that described deletion record operation only normally moves is set to " needing synchronous " state, and type is " deletion ";
(3) during, for the operation of new record more, if the sync mark of the database of normal operation is " needing synchronous " state, and type is " increasing newly ", more new record to operate the sync mark of the database that keeps normal operation after new record more constant, otherwise described more new record operate new record more and normally the sync mark of the database of operation be set to " needing synchronous " state, type is " renewal ";
The record queries operation of described database manipulation module to described database A, B:
(1), while receiving record queries operation requests, judge whether all normal operation and synchronously completing of described database A, B, if execution step (2), otherwise execution step (3);
(2), the filtercondition of sync mark is set to " synchronous " state, an optional database, query note;
(3), described database A, B whether in synchronous, if so, execution step (5); Otherwise execution step (4);
(4), whether have a database normally to move, if so, execution step (5); Otherwise execution step (6);
(5), suppose that described database A is the reference synchronization database of normal operation, the record of deleting is without inquiring about again, therefore by query filter condition setting be: not inquiring about sync mark is the record that " needing synchronous " and type are " deletion ", query note from described database A;
(6), described database A, all faults of B, return and inquire about unsuccessfully.
The invention has the beneficial effects as follows, it binds sync mark and record, by database manipulation module in the synchronous operation of recording roofing control disparate databases, the management and the operation that do not affect Database Systems self are processed in the synchronous operation of database, are applicable to very much the data synchronization applications exploitation based on different cloud computing database platforms.
Brief description of the drawings
Fig. 1 is the database manipulation module configuration diagram of operating database A, B simultaneously;
Fig. 2 is database A, B operating process and the status change schematic diagram while all normally moving;
Fig. 3 is operating process and the status change schematic diagram of individual data storehouse while normally moving;
Fig. 4 is operating process and the status change schematic diagram of database synchronization morphotype formula;
Fig. 5 is the amendment record operating process schematic diagram while only having a database normally to move;
Fig. 6 is the operating process schematic diagram of record queries database.
Embodiment
As shown in Figure 1, a kind of database synchronization method based on recording mark of the present invention, database A, database B adds corresponding sync mark in a business datum table, sync mark is the interpolation of doing for the every line item of mark, upgrade and deletion action, database manipulation module is in amendment business datum table when content, sync mark is arranged, as database A, when database B revises unsuccessfully, database manipulation module is by sync mark synchronous operating data storehouse A, record data in database B, database A, the method of data synchronization step of database B is:
The first, as shown in Figure 2, database A, B be normally operation all, directly database A, B is operated, and puts normal labeled in the tag field of respective data record:
(1), database manipulation module is carried out the operator scheme of two database normal states, be ready to record data, using the mark of record as sync mark, sync mark is set to " synchronous " state, amendment record in database A, if successfully amendment, execution step (2), otherwise execution step (3);
(2), in database B amendment record, the sync mark of corresponding record in database B is still set to " synchronous " state, if successfully amendment; execution step (1), otherwise execution step (4);
(3), the sync mark of record is set to " needing synchronous " state, amendment record and corresponding sync mark in database B, if successfully amendment; execution step (5), otherwise execution step (6);
(4), the sync mark of recording in database A being set is " needing synchronous " state, execution step (5);
(5), write down the running status of database A, B, database manipulation module is transitted towards individual data storehouse normal state pattern;
(6), database A, B all can not modify, database A, B break down, and get rid of after database A, B fault execution step (1);
The second, as shown in Figure 3, individual data storehouse is normally moved, and assumption database A normally moves, database B fault:
(1), database manipulation module is carried out the operator scheme of individual data storehouse normal state;
(2), be ready to record data, using the mark of record as sync mark, sync mark is set to " needing synchronous " state, amendment record in database A, if successfully amendment; execution step (3), otherwise execution step (4);
(3), check whether database B recovers normally, if recovered normally, execution step (5), otherwise perform step (1);
(4), database A, B all can not modify, database A, B break down, and get rid of after database A, B fault execution step (5);
(5), database manipulation module is transitted towards database synchronization morphotype formula;
The 3rd, as shown in Figure 4, database synchronization morphotype formula, the database A that is supposition normally moves, and database B normally moves from fault recovery, has up-to-date record need to be synchronized in database B in database A:
(1), database manipulation module carries out the operator scheme of database synchronization state, and data query service is externally only provided;
(2), database A normally moves, taking database A as benchmark, sync mark in scan database A is the record of " needing synchronous " state, and synchronous record corresponding to Update Table storehouse B, in database A, B, the sync mark of respective record is set to " synchronous " state, if success, execution step (3); Otherwise execution step (4);
(3), database manipulation module transits to the operator scheme of two database normal states;
(4), the database of abnormal running is fixed a breakdown, execution step (2).
The amendment record operation of database A, B be to record newly-increased, delete, upgrade operation, in the time that database A, B all normally move, the sync mark of corresponding record in database A, B is set to " synchronous " state;
As shown in Figure 5, the amendment record operation while only having a database normally to move, amendment record operation in the database of this normal operation, and its corresponding sync mark is arranged:
(1), during for newly-increased record operation, the sync mark that the database of normal operation is set is " needing synchronous " state, type be " increasing newly ", and interpolation is recorded in the database of normal operation;
(2) while, operation for deletion record, if the sync mark of the database of normal operation is " needing synchronous " state, and type is " increasing newly ", deletion record operates direct deletion record, otherwise the sync mark of the database that deletion record operation only normally moves is set to " needing synchronous " state, type is " deletion ", unactual deletion record;
(3) during, for the operation of new record more, if the sync mark of the database of normal operation is " needing synchronous " state, and type is " increasing newly ", more new record to operate the sync mark of the database that keeps normal operation after new record more constant, otherwise more new record operate new record more and normally the sync mark of the database of operation be set to " needing synchronous " state, type is " renewal ";
As shown in Figure 6, the record queries operation of database manipulation module to database A, B:
(1), while receiving record queries operation requests, judge whether all normal operation and synchronously completing of database A, B, if execution step (2), otherwise execution step (3);
(2), the filtercondition of sync mark is set to " synchronous " state, an optional database, query note;
(3), database A, B whether in synchronous, if so, execution step (5); Otherwise execution step (4);
(4), whether have a database normally to move, if so, execution step (5); Otherwise execution step (6);
(5), assumption database A is the reference synchronization database of normal operation, the record of deleting is without inquiring about again, therefore by query filter condition setting be: not inquiring about sync mark is the record that " needing synchronous " and type are " deletion ", query note from database A;
(6), all faults of database A, B, return and inquire about unsuccessfully.
Claims (3)
1. the database synchronization method based on recording mark, it is characterized in that: database A, database B add corresponding sync mark in a business datum table, database manipulation module is by the record data in described sync mark synchronous operating data storehouse A, database B, and the method for data synchronization step of described database A, database B is:
The first, described database A, B be normally operation all:
(1), described database manipulation module is carried out the operator scheme of two database normal states, be ready to record data, using the mark of described record as sync mark, described sync mark is set to " synchronous " state, in described database A, revise described record, if successfully amendment, execution step (2), otherwise execution step (3);
(2), in described database B, revise described record, the sync mark of corresponding record in described database B is still set to " synchronous " state, if described step (1) is carried out in successfully amendment, otherwise execution step (4);
(3), the sync mark of described record is set to " needing synchronous " state, revises described record and corresponding sync mark in described database B, if successfully amendment; execution step (5), otherwise execution step (6);
(4), the sync mark of recording described in described database A being set is " needing synchronous " state, execution step (5);
(5), write down the running status of described database A, B, described database manipulation module is transitted towards individual data storehouse normal state pattern;
(6), described database A, B all can not modify, described database A, B break down, and get rid of after described database A, B fault, carry out described step (1);
The second, individual data storehouse is normally moved, and supposes that described database A normally moves, described database B fault:
(1), described database manipulation module is carried out the operator scheme of individual data storehouse normal state;
(2), be ready to record data, using the mark of described record as sync mark, described sync mark is set to " need synchronous " state, in described database A, revise described record, if successfully amendment; execution step (3), otherwise execution step (4);
(3), check whether described database B recovers normally, if recovered normally, execution step (5), otherwise carries out described step (1);
(4), described database A, B all can not modify, described database A, B break down, and get rid of after described database A, B fault execution step (5);
(5), described database manipulation module is transitted towards database synchronization morphotype formula;
The 3rd, described database synchronization morphotype formula, the described database A that is supposition normally moves, and described database B normally moves from fault recovery, has up-to-date record need to be synchronized in described database B in described database A:
(1), described database manipulation module carries out the operator scheme of database synchronization state, and data query service is externally only provided;
(2), described database A normally moves, taking described database A as benchmark, scan the record that the sync mark in described database A is " needing synchronous " state, and synchronously revise record corresponding to described database B, in described database A, B, the sync mark of respective record is set to " synchronous " state, if success, execution step (3); Otherwise execution step (4);
(3), described database manipulation module transits to the operator scheme of two database normal states;
(4), the database of abnormal running is fixed a breakdown, carry out described step (2).
2. a kind of database synchronization method based on recording mark according to claim 1, it is characterized in that: the operation of the amendment record of described database A, B be to record newly-increased, delete, upgrade operation, in the time that described database A, B all normally move, the sync mark of corresponding record in described database A, B is set to " synchronous " state;
Amendment record operation while only having a database normally to move:
(1), during for newly-increased record operation, the sync mark that the database of normal operation is set is " needing synchronous " state, type be " increasing newly ", and interpolation is recorded in the database of normal operation;
(2) while, operation for deletion record, if the sync mark of the database of normal operation is " needing synchronous " state, and type is " increasing newly ", described deletion record operates direct deletion record, otherwise the sync mark of the database that described deletion record operation only normally moves is set to " needing synchronous " state, and type is " deletion ";
(3) during, for the operation of new record more, if the sync mark of the database of normal operation is " needing synchronous " state, and type is " increasing newly ", more new record to operate the sync mark of the database that keeps normal operation after new record more constant, otherwise described more new record operate new record more and normally the sync mark of the database of operation be set to " needing synchronous " state, type is " renewal ".
3. a kind of database synchronization method based on recording mark according to claim 1, is characterized in that: the record queries operation of described database manipulation module to described database A, B:
(1), while receiving record queries operation requests, judge whether all normal operation and synchronously completing of described database A, B, if execution step (2), otherwise execution step (3);
(2), the filtercondition of sync mark is set to " synchronous " state, an optional database, query note;
(3), described database A, B whether in synchronous, if so, execution step (5); Otherwise execution step (4);
(4), whether have a database normally to move, if so, execution step (5); Otherwise execution step (6);
(5), suppose that described database A is the reference synchronization database of normal operation, the record of deleting is without inquiring about again, therefore by query filter condition setting be: not inquiring about sync mark is the record that " needing synchronous " and type are " deletion ", query note from described database A;
(6), described database A, all faults of B, return and inquire about unsuccessfully.
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| CN105404633A (en) * | 2014-09-16 | 2016-03-16 | 无锡科技职业学院 | Client based database multi-point backup system and backup method |
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| CN107404540A (en) * | 2017-09-01 | 2017-11-28 | 北京奇虎科技有限公司 | The synchronous method and device of data |
| CN108108431B (en) * | 2017-12-19 | 2021-07-23 | 中国民航信息网络股份有限公司 | Data synchronization method and system |
| CN108108431A (en) * | 2017-12-19 | 2018-06-01 | 中国民航信息网络股份有限公司 | Method of data synchronization and system |
| CN108900497A (en) * | 2018-06-25 | 2018-11-27 | 江苏欧软信息科技有限公司 | Method of data synchronization and system between a kind of heterogeneous system |
| CN108900497B (en) * | 2018-06-25 | 2021-11-02 | 江苏欧软信息科技有限公司 | Data synchronization method and system between heterogeneous systems |
| CN110457395A (en) * | 2019-08-15 | 2019-11-15 | 中国银行股份有限公司 | The synchronous method and device of holiday data |
| CN113656490A (en) * | 2020-05-12 | 2021-11-16 | 华为技术有限公司 | Data synchronization method, device, terminal and storage medium |
| CN113656490B (en) * | 2020-05-12 | 2024-01-30 | 华为技术有限公司 | Data synchronization method, device, terminal and storage medium |
| CN113051349A (en) * | 2021-04-02 | 2021-06-29 | 广东美电贝尔科技集团股份有限公司 | Data synchronization method for duty system |
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Address after: Room 1-1603, Block A, Fengrun Building, 100 Industrial South Road, Lixia District, Jinan City, Shandong Province Patentee after: Shandong Zhongsi Information Technology Co.,Ltd. Address before: 250002 Jinjiling Villa District, 27307 Tourist South Road, Shizhong District, Jinan City, Shandong Province, 1-27 Patentee before: Shandong Zhongsi Information Technology Co.,Ltd. |
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