Introduction to Databases
The world generates an enormous amount of data from virtually every imaginable aspect of living—credit cards, store merchandise, telephone systems, websites, etc. Years ago, this was a manual effort to track and report against this information. Today, computer systems and databases manage this information. Databases simplify our lives.
Think of an address book you might buy. In it, you will write all of your important contacts—friends, family, relatives, companies, recruiters, and other people in your network. The address book contains all the data you need to contact anyone at any time.