@inproceedings{SIGMOD-1981-Stonebraker,
	author        = "Michael Stonebraker",
	booktitle     = "{Proceedings of the 11th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD81/P224.PDF",
	doi           = "10.1145/582318.582352",
	pages         = "224--229",
	publisher     = "{ACM Press}",
	title         = "{Hypothetical Data Bases as Views}",
	year          = 1981,
}