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

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

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

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

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Managing Databases with Oracle
An Oracle System Change Number (SCN):

is a value that is incremented whenever database changes are made.
is incremented whenever a deadlock occurs.
is a value that keeps track of explicit locks.
is a value that is incremented whenever a dirty read occurs.

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