You use a contained database named ContosoDb withina domain.
You need to create a user who can log on to the ContosoDb database. You also need to ensure that you can
port the database to different database servers within the domain without additional user account
configurations.
Which type of user should you create?
A.
SQL user without login
B.
User mapped to an asymmetric key
C.
Domain user
D.
login mapped to a virtual account
Correct answer is C.
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You are wrong. Correct answer is A because contained database user is mentioned. Users of the contained databases cannot have corresponding SQL server login.
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I agree A is the right answer as the database is contained.
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http://technet.microsoft.com/en-us/library/ff929071.aspx
so both seems OK.
Contained user
There are two types of users for contained databases.
Contained database user with password
Contained database users with passwords are authenticated by the database.
Windows principals
Authorized Windows users and members of authorized Windows groups can connect directly to the database and do not need logins in the master database. The database trusts the authentication by Windows.
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After long research I a finally convinced by this post:
https://www.mssqltips.com/sqlservertip/2792/sql-server-contained-databases-for-database-refreshes/
Should be: A SQL User without login
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I want to change my point of view… if you move it in the same domain, its much easier to take the domain user!
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The answer is C obviously. The only type of users that isn’t linked to the actual SQL Server instance, but to something in the domain, is the account based on the domain user (so B and D are invalid, since they are bound to the instance).
Certificates don’t have to do anything with it, so that would make A invalid too.
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I believe you have mentioned some very interesting details, thank you for the post.
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Correct Answer is C
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I’d say the correct answer is A – “SQL user without login” since “[…]ensure that you can port the database to different database servers […] WITHOUT ADDITIONAL USER ACCOUNT CONFIGURATIONS”. Imho that means that it should not be necessary to migrate any LOGINS on the new target server in order to have a functional database.
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