What type of integrity constraint does not allow someone to create an order for a nonexistent customer?
A) Relational integrity constraint
B) Business-critical integrity constraint
C) Information-critical integrity constraint
D) Mission-critical integrity constraint

Question

Quizplus · Accepted Answer

A relational integrity constraint ensures that relationships between tables remain consistent, such as ensuring that a foreign key in one table corresponds to a primary key in another table. This prevents creating an order for a nonexistent customer by ensuring the customer ID in the order table must exist in the customer table.

What Type of Integrity Constraint Does Not Allow Someone to Create