Index_R

R

radio buttons, 367

random.asp script, 360–361

random functions, PHP and ASP, 58–59

reading and writing text files, 255–257

records, 6, 193–195, 197–200

recordset objects, requirements of, 163

recordsets, 7, 104, 162, 169

redirection mechanism, 279–280

referential integrity checks defined, 190

register.php, 371, 372–375

regular expressions

JavaScript, 235–236

PHP, 234–235

SQL, 230–232

zip codes, 237–238

relationship defined, 7

relationships, Access, 207, 208, 209, 210

Request.query String() object method in ASP, 71

require command, PHP, 161, 169

rolling back defined, 369

root element defined, 382

row defined, 6