One of the main functions of a database system is to provide timely answers to end users.
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Q6: An index scan is less efficient than
Q7: The purpose of an I/O operation is
Q8: The SQL cache stores the end-user written
Q9: To work with data, the DBMS must
Q10: Good database performance is easy to evaluate.
Q12: DBMS implementations are typically similar in complexity
Q13: The B-tree index is used mainly in
Q14: Indexes do not facilitate join operations.
Q15: The SQL execution activities are performed by
Q16: The data cache caches system catalog data
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