There are four sql server database backup methods, namely: 1. Full backup, which can complete the backup of all data in one step; 2. File group backup, the data is placed in the file group, and a The file is set to the default; 3. Differential backup, which mainly backs up only the changed data; 4. Log backup, which records all transactions.
I believe many people are familiar with what sql server is, so how to back up sql server data? Today PHP Chinese website will summarize the sql server database What are the backup methods? [Recommended reading: What does sql server mean】
##1: Four backup methods of sql server database
1. Full backupFull backup only requires one step to back up all data. If you back up all the data, it may take a long time. After the backup is completed, it will be A copy exists in the database. 2. Differential backupDifferential backup mainly records the data that has changed since the last backup. Only the changed data is backed up. The previous data does not need to be backed up again, and it is faster than The database backup is small, and of course the backup speed is also very fast. Data can be backed up frequently, thereby reducing data loss. 3. File group backupWhen the data is relatively large, backup will usually be very time-consuming. We can put the data in the file group and add a If the file is set to the default, only individual files can be backed up without backing up the entire database, thereby speeding up the user's backup speed. 4. Log backupLog backup is a record of all transactions in the backup log. We can use the transaction log to restore data to a certain point.2: Frequently used backup combinations
Generally many people choose to use a combination of full backup and log backup or log backup, with a weekly cycle, Monday to Saturday Carry out log backup or log backup, and perform full backup on Sunday. The above is a complete introduction to the backup methods of sql server database. If you want to know more aboutMySQL video tutorial, please pay attention to the php Chinese website.
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