00339nam a2200121Ia 4500008004100000020001500041041001200056100001600068245007100084260004000155300000800195650001400203221030s9999    xx            000 0 und d  a8131760925  aEnglish  aS. K. Singh 0aDatabase Systems - Concepts, Design & Applicationscby S. K. Singh  bPearson  EducationaNew Delhic2012  a912  aComputers