What is logins DB?

Question

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. 12 июл. 2017 г.

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 −

What is the difference between Logins and users?

A Login is used for authentication into a SQL Instance while a User is used for authorization into a SQL Database. Note that Logins are used at the Instance level and Users are used at the Database level.

What is User DB?

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

SQL Login is for Authentication and SQL Server User is for Authorization. Authentication can decide if we have permissions to access the server or not and Authorization decides what are different operations we can do in a database.

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