tempdb: database is a workspace for holding temporary objects or intermediate result sets. SQL Server automatically maintains a complete online backup-and-restore history within tables in msdb, which includes the name of the party that performed the backup, the time of the backup, and the devices or files where the backup is stored.Ĥ. msdb: database is used by SQL Server Agent for scheduling alerts and jobs and by other features such as SSMS, Service Broker and Database Mail. Thus, if you modify the model database, all databases created afterward will inherit those changes.īecause tempdb is created every time SQL Server is started, the model database must always exist on a SQL Server system.ģ.

The entire contents of the model database, including database options, are copied to the new database. model: database is used as the template for all databases created on an instance of SQL Server. Starting SQL Server 2005 and ahead, system objects are no longer stored in the master database, instead, they are stored in the Resource database, mentioned below (5th type).Ģ. If in case you would like to move the master database or have moved it and ran into issues, check this post Move Master database. SQL Server cannot start if the master database is unavailable. It records the existence of all other databases and the location of those database files and records the initialization information for SQL Server. master: database records all the system-level information for an instance of SQL Server, which includes instance-wide metadata such as logon accounts, endpoints, linked servers, and system configuration settings.

–> Let’s check about these databases individually here:ġ. The 5th database is Resource which does not appear on SSMS. There are total 5 System Databases, out of these you can see 4 under the System Databases folder (above image, ignore the blue circled). And you would have observed the same set of databases on other machines or database servers you might have worked on or seen, as shown in the image below (red-circled): While working on SQL Server Management Studio you might have seen some default databases in System Database folder.

Ms sql master database