@inproceedings{VLDB-1993-IshikawaK,
	author        = "Hiroshi Ishikawa and Kazumi Kubota",
	booktitle     = "{Proceedings of the 19th International Conference on Very Large Data Bases}",
	ee            = "http://www.vldb.org/conf/1993/P467.PDF",
	isbn          = "1-55860-152-X",
	pages         = "467--478",
	publisher     = "{Morgan Kaufmann}",
	title         = "{An Active Object-Oriented Database: A Multi-Paradigm Approach to Constraint Management}",
	year          = 1993,
}