To count the number of rows in a table,use the SQL construct ________.
A) SELECT *
B) SELECT TOP n *
C) SELECT COUNT(TOP n)
D) SELECT COUNT(*)
Correct Answer:
Verified
Q73: The defining characteristic of BCNF is that
Q74: For a number of reasons,_ is not
Q75: The SQL keyword TOP _.
A)limits the number
Q76: Read-only databases are used for _.
A)updating
B)querying
C)data entry
D)user
Q77: The disadvantages of normalization include _.
A)the elimination
Q79: The advantages of normalization include _.
A)the elimination
Q80: To limit the number of rows retrieved
Q81: When a table is created using existing
Q82: Explain denormalization,and why it may be appropriate
Q83: A missing value is called a(n)_.
A)empty value
B)null
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