IBM
C2090-610 · Question #24
C2090-610 Question #24: Real Exam Question with Answer & Explanation
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Question
Which statement is true about an index that is used to support a UNIQUE constraint?
Options
- AIt must not contain more than one column.
- BIt cannot be used in a referential constraint.
- CIt must be defined with the UNIQUE attribute.
- DIt must be defined as UNIQUE WHERE NOT NULL.
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