TY - BOOK AU - Hagg,Stephen AU - Cummings,Maeve TI - Informationa Systems essentials SN - 007110139x : U1 - 658.4038011 PY - 2008/// CY - Boston PB - McGrow-Hill KW - Management information system KW - Management; Electronic commerce; e-Business; Systems development; Database management systems N2 - Business ER -