Oracle
1Z0-061 · Question #166
1Z0-061 Question #166: Real Exam Question with Answer & Explanation
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Question
Which two statements are true about constraints? (Choose two.)
Options
- AThe UNIQUE constraint does not permit a null value for the column.
- BA UNIQUE index gets created for columns with PRIMARY KEY and UNIQUE constraints.
- CThe PRIMARY KEY and FOREIGN KEY constraints create a UNIQUE index.
- DThe NOT NULL constraint ensures that null values are not permitted for the column.
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