Entity-relationship (E-R) design has a reputation as a useful but difficult to master tool for mapping clear database designs. In this update of their 2003 edition written to help students and database designers understand how to employ E-R design, computer scientists Bagui and Earp (U. of West Florida ) provide step-by-step coverage of the methodology of E-R diagramming per the software engineering strategy of eliciting what a user would like to have stored in an information system. The text includes a new chapter on the relational model and functional dependencies, expanded chapters on Enhanced Entity Relationship diagrams and reverse mapping, updated exercises, case studies, and a glossary. Annotation ©2011 Book News, Inc., Portland, OR (booknews.com)