The teachers want to take away with the cheating in examinations in their school.

A．do away with

B．put away with

C．get away with

D．turn away with

关系数据库的数据及更新操作必须遵循______等完整性规则。

A．实体完整性和参照完整性

B．参照完整性和用户定义的完整性

C．实体完整性和用户定义的完整性

D．实体完整性、参照完整性和用户定义的完整性