MCQs: Which is not a valid aggregate function?
(A). MAX
(B). MIN
(C). power()
(D). COUNT
Solved Answer: (C). power()
| Aggregate Function | Non-aggregate functions
( Arithmetic Function) |
Non-aggregate functions
( Character Function) |
| Aggregate functions run on many records and produce a summary | Scalar functions run on each record individually and independently | |
Examples
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Examples
ceil(): floor() power() sqrt() mod(): remainder from a division abs(): |
Examples
translate(): replaces a sequence of characters in a string with another sequence of characters. trim(): removes leading and trailing characters(or both) from a character string. lower(): convert all characters of a string to lower case upper(): convert all characters of a string to uppercase.
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MCQs: Which of the following is a valid aggregate function?
(A). MAX
(B). MIN
(C). sum
(D). All of these
Solved Answer: (D). All of these
MCQs: Which is not a valid aggregate function?
(A). MAX
(B). MIN
(C). sum
(D). None of these
Solved Answer: (D). None of these
Highly Recommended Database Important MCQs with Explanation
- Which of the following is not an aggregate function?
- Which of the following is not a Scalar function?
- In some database programs, a data file is referred to as a(n) ______.
- Which is the common data structure to implement a relational database?