@book{26257,
	author = {Silberchatz, Abraham},
	title = {Database system concepts},
	publisher = {McGraw Hill},
	address = {New Yourk},
	edition = {3rd},
	url = {https://libgen.is/book/index.php?md5=E5366285C8D8F931F81CF290A0A8611F}
}