... 299 -300 ,313, 318-319after, 296before, 296blocks, 53syntax for creating, 54creating (security exam-ple), 538-539data integrity (maintain-ing), 300 -304 listing, 302 defining, 299 -300 , ... 190dropping, 197invoking, 194, 199listing information, 195recompiling, 193-194storing objectsas columns, 345-347retrieving/updating,347-349object tables, 349,351-356creating, 350inserting ... 254debugging, 136FOR, 121-122, 146common errors, 124EXIT statement, 140listing, 121nesting, 121guidelines, 147incrementing through,123-124listing, 123infinite, 144, 380jumping into (GOTO),...