What is master DB used in SQL Server?

Question

The Master database is the primary configuration database in SQL Server. It contains information on all the databases that exist on the server, including the physical database files and their locations. The Master database also contains SQL Server's configuration settings and login account information.

What is the importance of the master system database?

The master database is the most important system database of the Database Engine. It comprises all system tables that are necessary for your work. For example, the master database contains information about all other databases managed by the Database Engine, system connections to clients, and user authorizations.

What is stored only in the master database?

Explanation: Server-scoped Dynamic Management View is stored only in the Master database.

What is the MSDB database used for?

The msdb database is used by SQL Server Agent for scheduling alerts and jobs and by other features such as SQL Server Management Studio, Service Broker and Database Mail. For example, SQL Server automatically maintains a complete online backup-and-restore history within tables in msdb.

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