COMPUTER FUNDAMENTALS

COMPUTER APPLICATIONS

DATABASE MANAGEMENT SYSTEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is not fully supported by all commercially available systems, but supports if religiously?
A
Entity integrity
B
Referential integrity
C
Relational algebra
D
Relational calculus
Explanation: 

Detailed explanation-1: -Answer: All references must be valid.

Detailed explanation-2: -Answer: i) All references must be valid.

There is 1 question to complete.