Referential ________ is a set of rules that Access uses to ensure that the data between related tables is valid

Why would a programmer specify a base-class type as the type of a catch handler, then throw objects of derived-class types?

What will be an ideal response?

You can press the ____ keys to paste a copied button, as shown in the accompanying figure.

A. CTRL + X B. CTRL + P C. CTRL + V D. CTRL + C