移动端

  • 题王微信公众号

    题王微信公众号

    微信搜“题王网”真题密题、最新资讯、考试攻略、轻松拿下考试

多选题

Which two statements are true about the primary key constraint in a table? ()

发布日期:2022-06-04

Which two statements are true about the primary ke...
A

It is not possible to disable the primary key constraint.

B

It is possible to have more than one primary key constraint in a single table.

C

The primary key constraint can be referred by only one foreign key constraint.

D

The primary key constraint can be imposed by combining more than one column.

E

The non-deferrable primary key constraint creates an unique index on the primary key column if it is not already indexed.

标签: "暂无标签"

题王网让考试变得更简单

扫码关注题王,更多免费功能准备上线!