e-commerce sites, 300–302, 367
endsession.php, 371, 378
entity defined, 8
entity-relationship diagrams (ERD)
college course project, 39, 86, 88
entity-relationship modeling, 7
general discussion, 6, 9, 79
mail order business, 81, 86, 300
quiz show application, 336
quiz show database, 9
entity-relationship modeling, 7
error catching defined, 164
errors, preventing, 50
error trapping defined, 164
escape/unescape functions, 181–183
European Organization for Nuclear Research, 16
events defined, 33
executing a function defined, 36
explain command, MySQL, 110, 122
expressions defined, 33
Extensible HTML. See XHTML