An instance of a relation that satisfies all real world constraints is known as?
A. Proper relation
B. Ideal relation
C. Perfect relation
D. Legal relation
I got this question in exam.
Asked question is from Decomposition Using Functional Dependencies topic in section Relational Database Design of RDBMS
Correct choice is D. Legal relation
Explanation: A relation that satisfies all the real world constraints is called as a legal relation. An instance of a legal relation is called as a legal instance.