000			00278nam a2200097Ia 4500
008			180926s9999 xx 000 0 und d
100			_aLEON,ALEXIS;LEON,MATHEWS;
245			_aDATABASE MANAGEMENT SYSTEMS
500			_aDATABASE ; MANAGEMENT ; SYSTEMS
650			_aGeneralities(000)
999			_c322757 _d322757