What is system database and user database in SQL Server?

Question

These databases will maintain and provide more information about the SQL server system like logins , databases , linked servers , jobs , schedules , reports , report data sources etc. User databases are the database where we will create for storing the data and the user starts to work with the data.

What are user databases in SQL Server?

A user is a database level security principal. Logins must be mapped to a database user to connect to a database. A login can be mapped to different databases as different users but can only be mapped as one user in each database. In a partially contained database, a user can be created that does not have a login.

What is system database?

Is a read-only database that contains system objects that are included with SQL Server. System objects are physically persisted in the Resource database, but they logically appear in the sys schema of every database.

What are the 4 system databases in SQL Server?

System Databases - master, model, tempdb, msdb - SQL Server.

What is the purpose of system databases in SQL Server?

The msdb database is used mainly by the SQL server Management Studio, SQL Server Agent to store system activities like sql server jobs, mail, service broker, maintenance plans, user and system database backup history, Replication information, log shipping .

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