You need to design the restrictions on the Bank.Customers table. Which three actions should you perform?()

A . Design a trigger that verifies that the first names and surnames are not empty strings. B . Design a check constraint that verifies that the first names and surnames are not empty strings. C . Design a check constraint that uses a CLR user-defined function to verify that either the phone number is a null value or the format of the phone number is valid. D . Design a trigger that uses a CLR user-defined function to verify that either the phone number is a null value or the format of the phone number is valid. E . Design a check constraint that ensures that the phone number cannot be changed from a valid format to a null value or to an invalid format. F . Design a trigger that ensures that the phone number cannot be changed from a valid format to a null value.

时间:2022-09-26 14:01:50 所属题库:MCITP(70-441)题库

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