On the Semantics of the Entity-Relationship Data Model.

Y. Edmund Lien On the Semantics of the Entity-Relationship Data Model. 155-168 1979 ER db/conf/er/er79.html#Lien79 conf/er/79 db/conf/er/Lien79.html er79/ER79-P155.pdf ... conf/vldb/BeeriBG78 journals/tods/Chen76 conf/afips/Chen77 journals/cacm/Codd70 conf/sigmod/Codd71a books/aw/Date77 journals/tods/Fagin77 conf/vldb/Lien79 ... ... ...