Exam-style question
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Which attribute would be the most suitable entity identifier for an entity called Member?.
- A.MemberName
- B.MemberEmail
- C.MemberID
- D.MemberAddress
Model answer
What a good answer should say
- MemberID
Explanation
Why this works
An entity identifier should identify a particular entity. A generated MemberID is more suitable because names, email addresses or addresses may not reliably identify one member in every situation.
Common mistake
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