Q1. Which term describes an attribute or combination of attributes that uniquely identifies a row in a relation?
A.Entity
B. Domain
C. Primary key
D. Attribute group
Correct Answer: C
Q2. Which term describes an attribute or combination of attributes that uniquely identifies a row in a relation?
A.Entity
B. Domain
C. Primary key
D. Attribute group
Correct Answer: C
Q3. What is a relational database domain?
A.A group of attributes
B. A set of permissible tuple values
C. A collection of related data items
D. A set of permissible attribute values
Correct Answer: D
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