In some cases, when you update the data in a table, you can reverse (cancel)them at any time during your current work session.
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Q13: You cannot use the INSERT command to
Q13: When necessary,include a WHERE clause into the
Q14: When you update the data in a
Q15: The ROLLBACK command reverses changes made to
Q17: The NULL value should be enclosed in
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Q20: You can use REMOVE ROW to remove
Q20: MySQL does not allow you to change
Q22: In order to use the COMMIT command
Q30: If you have verified that the update
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