Which database level is closest to the users, Database Management System

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Which database level is closest to the users?

External database level is closest to the users.


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For known, What are the function of DBA?

What are the function of DBA?

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What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.

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What is NULL? Simply NULL means not in value.

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