[SYMBOL][A][B][C][D][E][F][G][H][I][J][K][L][M][N][O][P][Q][R][S][T][U][V][W][X][Y][Z]n format code (date() function) n12br() functionwrapping text 2nd 3rd 4th name-based virutal hosting 2nd namesdefiningfiles (logging) domain namesaccess control rules of variablesselection considerations of varialbesselection considerations variables NameVirtualHost directive namingerror log files functions NATURAL JOIN command navigatingfiles 2nd negative terms nestingloops 2nd 3rd network/mask paircontrol access rules networkssettingsperformance scalability newline character () 2nd 3rd NIS (Network Information Services)user mangementclient authentication non-root users nonequivalence operator (!=) normal formsdefined first normal formsrules for 2nd second normal formsrules for 2nd 3rd third normal formsrules for 2nd normalizationdefined flat tables 2nd normal formsdefined first normal forms 2nd second normal forms 2nd 3rd third normal forms 2nd not operator (!) noticeLogLevel directive option NOW() function 2nd 3rd now() function NULL data type numberedHeading() function 2nd numbersdividing by zero numeric data types 2nd 3rd 4th 5th 6th 7th 8th 9th 10th