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328 results about "Database backup" patented technology

Database backup is a way to protect and restore a database. It is performed through database replication and can be done for a database or a database server. Typically, database backup is performed by the RDBMS or similar database management software.

Database backup system ensuring consistency between primary and mirrored backup database copies despite backup interruption

A database management system ensures consistency between primary and mirrored backup copies of a database, despite occurrence of a suspending condition interrupting the normal process of mirroring the primary database. One or more primary controllers are provided, each having a data storage unit with multiple primary data storage devices. Multiple secondary controllers each have multiple associated secondary data storage devices, each secondary controller being coupled to one primary controller. One or more primary databases reside on the primary devices, with a corresponding number of secondary databases residing on the secondary devices. Each secondary database mirrors a corresponding primary database. Either a host, attached to a primary controller, or one of the primary controllers itself, maintains a map cross-referencing each primary and secondary database with the primary and secondary devices containing portions thereof. If a predefined "suspending condition" affecting data mirroring occurs, the host or primary controller consults its map to identify all primary and secondary devices affected by the condition. Then, each primary controller stops all ongoing and future read/writes with each of its affected primary devices. Each primary controller also directs each secondary controller having an affected secondary device to stop mirroring the primary databases stored on that device. Then, the primary controller starts intermediate change recording and resumes read/writes with its primary devices. When the suspending condition ends, each primary controller applies the appropriate logged changes to its secondary database(s) and then reactivates each secondary database.
Owner:IBM CORP

Database backup and recovery system based on block chain technology, and database backup method based on block chain technology, and database recovery method based on block chain technology

The invention provides a database backup and recovery system based on a block chain technology. The database backup and recovery system comprises a switching center, wherein the switching center is connected with a client side, is connected with one or a plurality of databases and is connected with one or a plurality of block chain nodes through a block chain adapter, and the switching center manages mapping relationships between the plurality of databases and the plurality of block chain nodes for data backup and recovery. The invention also provides a database backup method based on the block chain technology, and a database recovery method based on the block chain technology. The block chain technology is used, the characteristics that the block chain technology can not be tampered and can be permanently stored are utilized, meanwhile, data is distributed in the block chain nodes, overall failure caused by the faults of a center point can be avoided, so that safe and reliable database backup is realized, most of organizations can properly control cost and effectively deploy a backup scheme in existing environment to enable the requirements of most of organizations to be met, and the methods and the system can be generally implemented and have a very wide application scene.
Owner:BEIJING ZHONGXIANG BIT TECH

Catering service platform system based on cloud computing platform and working method thereof

The invention relates to a catering service platform system based on a cloud computing platform and a working method thereof. The catering service platform system based on the cloud computing platform comprises a cloud computing platform, a Web server, a foreground client logging-in system and a kitchen management system, wherein the Web server is used for storing the relevant catering Web information of a merchant, a database server, a buffer memory server and a search server are connected with the Web server, the Web server and a Web backup server are connected, and the Web server and a database backup server are connected; the foreground client logging-in system is used for receiving the dish ordering information of customers registered by the cloud computing platform; after the condition that the customers arrive at a restaurant is verified, dishes in the dish ordering information are correspondingly modified, and the dishes are confirmed after the mixture ratio of relevant flavorings is regulated according to the tastes of the customers; and the kitchen management system is used for receiving the information of the dishes after being confirmed by the customers and also arranging an optimal dish output sequence to inform a kitchen of disposing cooking according to the variety of the dishes in the all dish ordering information of the customers. According to the system, the workload of waiters is saved, the operating cost of a restaurant is lowered, and the dining interestingness of customers is enhanced.
Owner:CHANGZHOU INST OF TECH
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