Allen G. Taylor, «SQL For Dummies», 5th EditionWiley | ISBN 0764540750 | August 2003 | 432 Pages
Many database management system (DBMS) tools run on a variety of hardware platforms. The differences among the tools can be many, but all serious products have one thing in common: They support data access and manipulation in SQL, the industry-standard language specifically designed to enable people to create and manage databases. If you know SQL, you can build relational databases and get useful information out of them.