Managing Databases with Oracle
Which statement about sequences is not true?

A sequence is an object that generates a sequential series of unique numbers.
NextVal and CurrVal are both sequence methods.
Sequences are most often used to provide values for surrogate keys.
Sequences guarantee valid surrogate key 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?

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

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