试题详情
- 多项选择题 Exhibit：
View the Exhibit to see the data in the emp table. You created a PRIMARY KEY constraint on the empno column of the emp table， and the constraint is not deferred. Which two statements are true in this scenario？ （） A、No index would be created or used in this case.
B、A unique index on the empno column would be created.
C、A CHECK constraint would be enforced on the empno column.
D、A NOT NULL constraint would be enforced on the empno column.
E、A bitmap unique index would be created on the empno column.
- B,D
关注下方微信公众号，在线模考后查看
热门试题