Database MCQs

1 MCQs — Computer / IT MCQs

Practice Database MCQs with correct answers and explanations. These questions are from the Computer / IT MCQs section.

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Computer / IT Subcategories

Database	Excel
Memory	MS Word
Networking	Number system
Security	Software

A primary key in a relational database must be:

Unique and not null
Duplicate but not null
Unique but may be null
Any text field

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