Permissions
You **SHOULD:-
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Define database roles for the specific type of database access required.
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Grant database object permissions only to database roles.
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Grant database access to Active Directory groups and service accounts via membership of database roles.
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Record information about the accounts you create and the permissions you assign them in each environment.
You SHOULD NOT:-
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Instinctively grant database owner (dbo) permissions.
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Use SQL Server logins, unless working with a 3rd party application that specifically requires their use.
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Grant database access to individual user accounts.