October 2002
Beginner
864 pages
18h 41m
English
Content preview from Sams Teach Yourself SQL in 21 Days, Fourth Edition
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Bonus Day 4
Quiz
| 1: | How is a database trigger used? |
| A1: | A database trigger takes a specified action when data in a specified table is manipulated. For instance, if you make a change to a table, a trigger could insert a row of data into a history table to audit the change. |
| 2: | Can related procedures be stored together? |
| A2: | Related procedures can be stored together in a package. |
| 3: | True or false: Data Manipulation Language (DML) can be used in a PL/SQL statement. |
| A3: | True. |
| 4: | True or false: Data Definition Language (DDL) can be used in a PL/SQL statement. |
| A4: | False. DDL cannot be used in a PL/SQL statement. It is not a good idea to automate the process of making structural changes to a database. |
| 5: | Is the capability of outputting text on the screen contained ... |
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