Aggregate functions are functions that take a ___________ as input and return a single value.
A. Collection of values
B. Single value
C. Aggregate value
D. Both a & b
Answer:A
Aggregate functions are functions that take a ___________ as input and return a single value.
A. Collection of values B. Single value C. Aggregate value D. Both a & b
Explanation:None. 2. Select __________