Database Tutorial

Objectives

There are two objectives for the twelfth week. The best way to accomplish these objectives is two fold. First, you need to read the articles and web pages referenced through links in the summary page. This also includes any subordinate pages referenced through links. Second, you need to do the work and use the tools to copy existing scripts, edit scripts, and test scripts.

• Learn how to perform data transformation.
• Learn how to perform selective aggregation.

Reading Assignments

You should prepare by reading the following articles. There will be many new terms. You may want to check the Glossary in the Oracle Database 12c PL/SQL Programming book to understand most of those new terms. After your preparation, you should work through the examples provided for you in the reading.

• Prepare (Reading):
• Understand how embedded CASE operators inside aggregation functions.
• Understand how to use column aliases to transform selective aggregated results into meaningful report data.
• Teach One Another (Lab):
  • Create a set a SELECT statement that generates a standard annual report of monthly, quarterly, and annual data for debits, credits, and the total of both.
• Ponder and Prove (Internalization):
  • Compare and contrast methods and practices that support selective aggregation.
  • Compare and contrast methods and practices that support SQL report writing by using column aliases to transform aggregated data.
  • Examine and understand how to combine selective aggregation and column aliasing to write meaningful reports with SQL queries.

Reference Materials

After you’ve read the article and tutorials, you should experiment with the examples provided in the article or tutorials. The second week’s lab starts with copying, editing, and testing unit and integration testing scripts:

• Reading
  • Data Transformation
• Articles
  • Selective Aggregation
• Tutorials
  • SQL Reporting
• Lab
  • Description
  • Help Section
  • Instructions

The lab relies on your ability to navigate in the SQL*Plus command-line interface and the ability to edit a script file. Your student images have had the necessary files placed in the proper location to support your lab assignment.

You should read through the Quiz 12: Review Notes to ensure you understand Week 12 material before moving on to Week 13. Please feel free to identify and comment on anything that would benefit form different wording or supplemental ideas.