Database - Logical Database Design
Exercise :: Logical Database Design - True or False
| 1. |
An enterprise key is a primary key whose value is unique for a given relation. |
Answer: Option B
Explanation:
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| 2. |
A composite attribute does not get mapped into a relation. |
Answer: Option A
Explanation:
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| 3. |
A relation is a two-dimensional table. |
Answer: Option A
Explanation:
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| 4. |
Weak entities do not get mapped into a relation. |
Answer: Option B
Explanation:
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| 5. |
A primary key may be null. |
Answer: Option B
Explanation:
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