Author Question: A(n) ________ is an assertion or rule that governs the validity of data manipulation operations such ... (Read 335 times)

Arii_bell · **on:** Jul 7, 2018

A(n) ________ is an assertion or rule that governs the validity of data manipulation operations such as insert, update, and delete.

A) Domain
B) Event
C) Referential integrity
D) Triggering operation

Question 2

Describe how a binary one-to-one relationship is represented.

What will be an ideal response?

jordangronback · **Reply #1 on:** Jul 7, 2018

Answer to Question 1

D

Answer to Question 2

A binary one-to-one relationship can be represented in three ways: (1 ) the primary key of the first entity can serve as a foreign key of the second entity; (2 ) the primary key of the second entity can serve as a foreign key of the first entity; or (3 ) each entity's primary key can serve as a foreign key of the other entity.