Horn tables-an efficient tool for handling incomplete information in databases

G. Grahne
1989 Proceedings of the eighth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems - PODS '89  
doi:10.1145/73721.73728 dblp:conf/pods/Grahne89 fatcat:l4xv6tkynbgg3mnzvuldyffrji