试题详情
- 单项选择题What is true about updates through a view? （）
A、You cannot update a view with group functions.
B、When you update a view group functions are automatically computed.
C、When you update a view only the constraints on the underlying table will be in effect.
D、When you update a view the constraints on the views always override the constraints on the underlying tables.
关注下方微信公众号，在线模考后查看
热门试题
- Which two statements
- The STUDENT_GRADES
- Evaluate the SQL sta
- Examine the structu
- You need to produce
- The user Sue issues
- Evaluate the SQL st
- Which SELECT stateme
- Which SQL statement
- Which three SELECT s
- Evaluate these two S
- The EMP table conta
- Examine the data fr
- What does the TRUNCA
- You need to create a
- Which operator can b
- In which scenario wo
- The EMPLOYEES table
- Which is a valid CRE
- Evaluate the set of