Which of the following improves a query's processing time?
A. Write complex queries.
B. Combine a table with itself.
C. Query one query within another.
D. Use compatible data types.
Answer: Option D
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Related Questions on Physical Database Design
A. All fields are stored in one relation.
B. All fields are stored in two relations.
C. All fields are stored in three relations.
D. All fields are stored in four relations.
Selecting a data type involves which of the following?
A. Maximize storage space
B. Represent most values
C. Improve data integrity
D. All of the above.
A. VARCHAR2
B. CHAR
C. LONG
D. NUMBER
A. All fields are stored in one relation.
B. All fields are stored in two relations.
C. All fields are stored in three relations.
D. All fields are stored in four relations.
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