试题详情
- 多项选择题Which three statements correctly describe the functions and use of constraints? （）
A、Constraints provide data independence.
B、Constraints make complex queries easy.
C、Constraints enforce rules at the view level.
D、Constraints enforce rules at the table level.
E、Constraints prevent the deletion of a table if there are dependencies.
F、Constraints prevent the deletion of an index if there are dependencies.
关注下方微信公众号，在线模考后查看
热门试题
- Which three statemen
- ClicktheExhibitbutto
- Which two statements
- You are the DBA for
- Which view should a
- You need to modify t
- You need to create a
- Which SQL statement
- You would like to di
- What does the FORCE
- Which constraint can
- Which two statements
- From SQL*Plus, you
- ExaminethedataintheE
- Which SQL statement
- EvaluatethisSQLstate
- Mary has a view call
- User Mary has a view
- Which SQL statement
- Mary has a view cal