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SQL Server Credentials

Credentials (Database Engine)

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.
The information stored in a credential enables a user who has connected to SQL Server by way of SQL Server Authentication to access resources outside the server instance. When the external resource is Windows, the user is authenticated as the Windows user specified in the credential. A single credential can be mapped to multiple SQL Server logins. However, a SQL Server login can be mapped to only one credential.
System credentials are created automatically and are associated with specific endpoints. Names for system credentials start with two hash signs (##).
To check the credentials available from an instance os SQL Server, execute

select * from sys.credentials

To create a credential

  1. In Object Explorer, expand Security, right-click Credentials, and then click New Credential.
  2. In the New Credentials dialog box, in the Credential Name box, type a name for the credential.
  3. In the Identity box, type the name of the account used for outgoing connections (when leaving the context of SQL Server). Typically, this will be a Windows user account. But the identity can be an account of another type.
  4. In the Password and Confirm password boxes, type the password of the account specified in the Identity box. If Identity is a Windows user account, this is the Windows password. The Password can be blank, if no password is required.
  5. Click OK.
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