@book {DBLP:reference/db/2018,
	title = {Encyclopedia of Database Systems, Second Edition},
	year = {2018},
	publisher = {Springer},
	organization = {Springer},
	isbn = {978-1-4614-8266-6},
	doi = {10.1007/978-1-4614-8265-9},
	url = {https://doi.org/10.1007/978-1-4614-8265-9},
	editor = {Ling Liu and M. Tamer {\"O}zsu}
}
@book {DBLP:reference/db/2009,
	title = {Encyclopedia of Database Systems},
	year = {2009},
	publisher = {Springer US},
	organization = {Springer US},
	isbn = {978-0-387-35544-3},
	doi = {10.1007/978-0-387-39940-9},
	url = {https://doi.org/10.1007/978-0-387-39940-9},
	editor = {Ling Liu and M. Tamer {\"O}zsu}
}
