@book{57712,
	author = {Conolly T. , and Begg C.},
	title = {Database systems a practical approach to design implementation and management  },
	publisher = {Dorling Kindersley (India) Pvt.Ltd. Licensees of Pearson Education},
	year = {(2005 c) 2012 },
	address = {New Delhi},
	edition = {4th ed.}
}