Carlo Zaniolo Michel A. Melkanoff A Formal Approach to the Definition and the Design of Conceptual Schemata for Database Systems. 24-59 TODS7/P024.PDF 1982 7 ACM Trans. Database Syst. 1 db/journals/tods/tods7.html#ZanioloM82 http://doi.acm.org/10.1145/319682.319695 db/journals/tods/ZanioloM82.html conf/focs/AhoBU77 conf/vldb/AroraC78 journals/tods/Beeri80 journals/tods/BeeriB79 conf/vldb/BeeriBG78 conf/sigmod/BeeriFH77 ... journals/tods/Bernstein76 journals/tods/Chen76 ... persons/Codd71a conf/ifip/Codd74 books/aw/Date77 journals/tods/Fagin77 conf/vldb/Fagin77 conf/ds/Falkenberg76 conf/vldb/FloryK78 conf/ds/HallOT76 ... ... conf/er/Lien79 conf/er/MelkanoffZ79 conf/vldb/Nicolas78 journals/tods/Rissanen77 conf/vldb/RoussopoulosM75 ... conf/sigmod/SchmidS75 ... journals/cacm/SmithS77 conf/mfcs/SpyratosB78 journals/is/TsichritzisK78 ... journals/tods/ZanioloM81