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This article will explain in detail how the backup and restore mechanism of SQL server is, and the content of the article is of high quality, so the editor will share it with you for reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

SQL server backup and restore components provide an important means of protection for critical data stored in SQL server databases.

The backup and restore components of SQL scrver can create copies of the database. Store this copy in a location for use in the event of a failure of the server running the SQL server instance. If the server running the SQL server instance fails, or if the database is damaged to some extent, you can recreate or restore the database with a backup copy.

Alternatively, you can back up and restore databases for other days, such as copying databases from one server to another. By backing up the database on one computer and then restoring the database to another computer, you can quickly and easily generate a copy of the database.

SQL server provides the following complete backup and restore functions: ① full database backup is a complete copy of the database; ② transaction log backup replicates only transaction logs; ③ differential backup replicates only database pages that have been modified since the last full database backup; and ④ file or filegroup restore allows you to restore only that portion of the data in the database that is on the failed disk. These options allow you to adjust the backup and restore process based on the importance of the data in the database.

SQL Scrver contains BACKUP and RESTORE backup and restore control statements. Users can execute BACKUP and RESTORE statements directly through applications, Transact-SQL scripts, stored procedures, and triggers. But it is more common to use SQL server Enterprise Manager to define backup schedules so that sQL server agents can automatically run backups according to the schedule. The Database maintenance Plan Wizard can be used to define and schedule a full set of backups for each database. This makes the backup process completely white, with no or very little operator operation.

Backups can be performed while the database is in use, making it possible to back up systems that must be run continuously.

The backup processing and internal data structure of SQL servcr have been structured, so that backup can improve data transmission to a limited extent, while keeping the impact on transaction throughput to a minimum. Enables backup and restore operations to achieve faster data transfer rates, enabling SQL server to support very large databases (VLDB).

Restore and backup are two reciprocal operations, including restoring system databases, database backups and sequentially restoring all transaction logs. SQI server supports automatic restore and manual restore, which is actually a fault-tolerant feature. SQI scrver performs an automatic restore every time it fails or restarts after a shutdown. If necessary, the RESTORE statement will recreate the database for nothing. When interrupted backup and restore operations restart, it starts close to the breakpoint.

SQL server also provides full-featured import / export capabilities.

About how the SQL server backup and restore mechanism is shared here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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