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What is the difference between a user without a login and orphaned Users?
Normally when orphaned users are discovered they are just connected back to their associated logins. However a user without login is one that does not have and cannot have an associated login.
How can data be accessed by Users who do not have direct access to the tables?
Even if a user does not have direct access to a table, such as inserting, updating, deleting or even selecting from a table, we can still use grants on stored procedures to allow data operations. The audit table records the date and user with the final insert statement.
Do you need a login to access a database?
First you need to have a valid login to connect to Sql Server. After that the login should be mapped to a user in each database to access it individually. Login is at the server level to gain access to Sql Server and user is at the database level to access the database. So you can go ahead and remove those users.
Where does the user login go in SQL Server?
After that the login should be mapped to a user in each database to access it individually. Login is at the server level to gain access to Sql Server and user is at the database level to access the database. So you can go ahead and remove those users. Let’s take a BIG step back here.
What happens when you create a user without a login?
When you execute CREATE USER WITHOUT LOGIN, you get a user in the database that will NOT have a login associated to it. This is intentional and by design. This is NOT an orphaned user. When you create a user without a login, there is no path that allows a login to be mapped to that particular user in the database.
Can a database be accessed by a loginless user?
It says: “The improvement to SQL Server is loginless users. Users authenticate to the server instance with their own credentials, but by accessing the database, the user then impersonates the loginless user for permissions via EXECUTE AS.