The property (or set of properties) that uniquely defines each row in a table is called the:
A. Identifier
B. Index
C. Primary key
D. Symmetric key
Answer:A
The property (or set of properties) that uniquely defines each row in a table is called the:
A. Identifier B. Index C. Primary key D. Symmetric key
Explanation: Primary is used to uniquely identify the tuples .