Managing Databases with Oracle
Which of the following is not true about indexes?

Indexes are created to enforce uniqueness on columns.
Columns that are frequently used with equal conditions in WHERE clauses are good candidates for indexes.
Indexes are created with the ALTER TABLE command.
Indexes are created to enable fast retrieval by column values.

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Managing Databases with Oracle
In creating a procedure, you may get a message if you have compile errors. Which of the following is true?

SQL*Plus will automatically show the errors to you.
To see the errors, enter SHOW ERRORS in SQL*Plus.
If there are no syntax errors, you will receive the message "NO ERRORS."
The line numbers reported match the line numbers you see in your text editor.

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