What is a login database?

Question

A login is a simple credential for accessing SQL Server. For example, you provide your username and password when logging on to Windows or even your e-mail account. This username and password builds up the credentials. Therefore, credentials are simply a username and a password. SQL Server allows four types of logins −

A login is a security principal at the scope of the SQL Server instance, and a SQL Server instance can contain numerous databases. There are two main types of logins; Windows authenticated login and SQL Server authenticated login. Simply stated, a login allows you to connect to a SQL Server instance.

What is a user database?

User databases are the database where we will create for storing the data and the user starts to work with the data.

What is credential database?

A credential is a record that contains the authentication information (credentials) required to connect to a resource outside SQL Server. This information is used internally by SQL Server. Most credentials contain a Windows user name and password.

What is the difference between logins and users?

A Login is an identity used to connect to a SQL Server instance. A User allows you to log into a SQL Server database and is mapped to a Login.

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