A relational query optimizer optimizes ____.
A) the performance of a relational query
B) the performance of a relational catalog
C) a higher-level language program that has embedded SQL SELECT commands
D) the data normalization process
E) None of the above.
Correct Answer:
Verified
Q27: The SQL SELECT built-in function COUNT _.
A)
Q28: The SQL SELECT ORDER BY operator _.
A)
Q29: The SQL SELECT LIKE operator _.
A) involves
Q30: In a merge-scan join _.
A) neither of
Q31: When an SQL SELECT command has a
Q33: A relational query optimizer _.
A) is a
Q34: A subquery can be used in place
Q35: The SQL SELECT command is used to
Q36: The SQL SELECT GROUP BY clause is
Q37: The SQL SELECT command is capable of
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