In the coming modules, you will quickly begin to understand how SQL works with the information in your systems and how it can be applied to satellite television.
SQL was designed for relational database systems, thanks to Dr. Edgar Codd.
You will find out how relational approaches differ from more traditional databases, and why this is important to understand as you start using SQL.
Finally, you will learn about normalization--what it means and why it's important. Understanding normalization is key to using databases, and the concepts are straightforward yet powerful. By obtaining a good understanding of the ideology now, you'll be set not only to query databases but to understand the underlying reasoning behind setting them up in the manner in which they were created.