Which statement regarding NOT ENFORCED unique constraints is true?
Posted: Fri Aug 26, 2022 9:58 am
Which statement regarding NOT ENFORCED unique constraints is true?
A. NOT ENFORCED unique constraints enforce uniqueness only for primary key columns.
B. The query optimizer will consider a NOT ENFORCED unique constraint when selecting the optimal data access plan.
C. Storage requirements for NOT ENFORCED unique constraints are identical to storage requirements for a unique index.
D. When attempting to insert data that does not conform to the NOT ENFORCED unique constraint, an error will be returned and the record will not be inserted.
A. NOT ENFORCED unique constraints enforce uniqueness only for primary key columns.
B. The query optimizer will consider a NOT ENFORCED unique constraint when selecting the optimal data access plan.
C. Storage requirements for NOT ENFORCED unique constraints are identical to storage requirements for a unique index.
D. When attempting to insert data that does not conform to the NOT ENFORCED unique constraint, an error will be returned and the record will not be inserted.