whegym.blogg.se - Sql backup master free

Functionality of a copy-only backup is the same as full database with a difference that a transaction log backup will backup all transactions since the last full backup is performed and ignore the existence of the copy backup, therefore a copy backup cannot be used as the basis for differential and transaction log backups. Copy-only backups are mostly used when it’s needed to backup a database without affecting the processes of backup and restore for a specific database.A transaction log backup has also be performed to span all the file backups from start to finish when using file backups to restore a database. A file backup will contain all the data in one or more files or filegroups.

File and filegroup backups option is most suitable for backing up very large databases.

A transaction log backup ensures database recovery to a specific point of time e.g.

Transaction log backups records all the transactions that have occurred on a database since the previous transaction log backup and then truncates the transaction log and then truncates a transaction log.

After taking a differential backup, as it is taken after the last full backup all of the old differential backups become obsolete. A differential backup is used alongside with the last full database backup.

Differential backups contain data that has changed since the last full backup was performed and transactions that occur during the backup process.

Full database backups allow performing a complete restoration to a state before the backup is performed.

Full database backups include all database objects, system tables, data, and transactions that occur during the backup.

This article will describe 3 different solutions/approaches for creating a scheduled backup in SQL ServerĪs a part of a backup strategy, several types of backup can be used together. Having a good backup and restore plan is an important part of a disaster recovery strategy.