Question: What is referential integrity rule? Multiple Choice Primary keys cannot be null. Foreign keys cannot be null. The data values of a forging key always
What is referential integrity rule?
Multiple Choice
-
Primary keys cannot be null.
-
Foreign keys cannot be null.
-
The data values of a forging key always exist in the corresponding table.
-
Foreign keys could be null.
Step by Step Solution
There are 3 Steps involved in it
Get step-by-step solutions from verified subject matter experts
