Author Question: Removing duplicate records is a common database task. Indicate whether the statement is true or ... (Read 90 times)

WWatsford · **on:** Jul 7, 2018

Removing duplicate records is a common database task.

Indicate whether the statement is true or false

Question 2

Which of the following best describes the effect of enforcing referential integrity on deletes?

A) You cannot enter data into a foreign key table unless it is related to an existing record in the primary key table
B) You cannot remove a record from the primary key table if it has related records in the foreign key table
C) You cannot change a primary key that has related records in a foreign key table
D) All of the above