An Event/Trigger Mechanism to Enforce Complex Consistency Constraints in Design Databases.

http://doi.acm.org/10.1145/15833.15836 Klaus R. Dittrich Angelika M. Kotz Jutta A. Mülle An Event/Trigger Mechanism to Enforce Complex Consistency Constraints in Design Databases. 22-36 sigmodR/15-3/P022.pdf 1986 15 SIGMOD Record 3 db/journals/sigmod/sigmod15.html#DittrichKM86