@book{20872,
	author = {Ram. D. Janaki},
	title = {Database Design:},
	publisher = {Indian Insitiute of Technology},
	address = {Madras},
	url = {http://video.snu.edu.in/index.php?id=1371&cat=Computer Science and  Engineering&course=Database Design&url=Phase1_Video/106106093/lec07.mp4}
}