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For more classes visit www.indigohelp.com L A B O V E R V I E W Scenario/Summary There is a lot more to a database than just tables and the data in them. A very important part of database security has to do with using and understanding Database Views. Being able to enhance the efficiency of the database tables by using additional indexes is also a very important aspect of database development. Finally, being able to create and use Database Sequences to automate some of the sequential processes in the database can not only save time but improve efficiency. In Lab 7, you will have a chance to work with all three of these areas. General Lab Information and Considerations This lab will utilize the same set of tables found in the script file (LeeBooks.SQL) that were used for Labs 4 through 6. Each query in the script file you will create, must be numbered (use either –1 or REM 1 comments for numbering) and in order. The SQL for the following exercises should be written using notepad and run in SQL*Plus. Read each problem carefully and follow the directions as stated. A Clean Script File: A script file is meant to be like a program. The file can be run every time the code needs to be executed without having to retype the code again each time. For this reason, it is important that there are no errors in the code inside the file. You can go back and forth between notepad and Oracle when creating your script file to check your queries and verify if they work or not. However, you do not want to create your final output file until after you have verified that everything in your script is correct by running it in its entirety at least once and viewing the output. Once this has been done, you can create your final output file, with echo on to create the document, you can turn in with your lab. Remember in using a Spool Session, you must type "SPOOL OFF" at the SQL> PROMPT after your Script stops spooling to capture all of your data! Lab Do's and Don't's Do Not include the LEEBOOKS.SQL as part of your lab script. Do use Notepad to write your query script file. Do Not write your queries in Word. Do test each query before moving on to the next. Do Not include extra queries for a problem unless the problem explicitly asks for more than one query. Do test your queries before creating your
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