Count function in SQL returns the number of
A) values.
B) distinct values.
C) groups.
D) columns.
Correct Answer:
Verified
Q1: A subschema expresses
A)the logical view.
B)the physical view.
C)the
Q3: First generation computer systems used
A)transistors
B)vacuum tubes
C)magnetic cores
D)silicon
Q4: .Which one of the following is a
Q5: Computers can be classified in which of
Q6: The unit of hardware, which an operator
Q7: Which one of the following a file?
A)floppy
Q8: An I/O device which provides photographic outputs
Q9: A term used interchangeably with diskette is
A)disk
Q10: Which is a type of Electrically-Erasable Programmable
Q11: When you insert an Excel file into
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