Cis/336 Ilab 5 of 7 - Sql Course
CIS/336 iLab 5 of 7 - SQL Course
Lab 5 of 7: Retreiving data from Multiple Tables (28 points) L A B O V E R V I E W
Scenario/Summary
Lab 5 deals with writing queries using multiple tables as covered in the reading and lecture material this week. In some cases, you will be given the option to write a query using either the TRADITIONAL method of joining tables or using the JOIN key word. In some cases, you will be asked to use a specific approach. Using the incorrect process when the process is specified will result in points being taken off for that problem. The SELECT statement is the primary means of extracting data from database tables, and allows you to determine exactly which data you want to extract by means of different comparison operators used in the WHERE clause. This includes the use of specific "wild card" characters which allow you to search for character or number patterns within the data. You can also perform mathematical expressions within the SELECT statement to create derived output. The ORDER BY clause allows you to sort the output data in either ascending (the default) or descending order. Lab #5 will explore all of these applications of the SELECT statement.
General Lab Information and Considerations
This lab will utilize a set of tables found in the script file (LeeBooks.sql) found in the Doc Sharing area of the website. If you have not yet downloaded this file from Doc Sharing then do so now. Once you have downloaded the script file, import and run the script in SQL*Plus.
Each query in the script file you will create must be numbered (use --1 comments for numbering) and in order. The SQL for the following exercises should be written using notepad and run in SQL*Plus.
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
Lab 5 of 7: Retreiving data from Multiple Tables (28 points) L A B O V E R V I E W
Scenario/Summary
Lab 5 deals with writing queries using multiple tables as covered in the reading and lecture material this week. In some cases, you will be given the option to write a query using either the TRADITIONAL method of joining tables or using the JOIN key word. In some cases, you will be asked to use a specific approach. Using the incorrect process when the process is specified will result in points being taken off for that problem. The SELECT statement is the primary means of extracting data from database tables, and allows you to determine exactly which data you want to extract by means of different comparison operators used in the WHERE clause. This includes the use of specific "wild card" characters which allow you to search for character or number patterns within the data. You can also perform mathematical expressions within the SELECT statement to create derived output. The ORDER BY clause allows you to sort the output data in either ascending (the default) or descending order. Lab #5 will explore all of these applications of the SELECT statement.
General Lab Information and Considerations
This lab will utilize a set of tables found in the script file (LeeBooks.sql) found in the Doc Sharing area of the website. If you have not yet downloaded this file from Doc Sharing then do so now. Once you have downloaded the script file, import and run the script in SQL*Plus.
Each query in the script file you will create must be numbered (use --1 comments for numbering) and in order. The SQL for the following exercises should be written using notepad and run in SQL*Plus.
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