Which of the following is not true about indexes?

A. Indexes are created to enforce uniqueness on columns.

B. Indexes are created to enable fast retrieval by column values.

C. Columns that are frequently used with equal conditions in WHERE clauses are good candidates for indexes.

D. Indexes are created with the ALTER TABLE command.

Answer: Option D

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Related Questions on Managing Databases with Oracle

Which statement about sequences is not true?

A. A sequence is an object that generates a sequential series of unique numbers.

B. Sequences are most often used to provide values for surrogate keys.

C. NextVal and CurrVal are both sequence methods.

D. Sequences guarantee valid surrogate key values.