The entity-relationship model—toward a unified view of data
ACM Transactions on Database Systems (TODS) - Special issue: papers from the international conference on very large data bases: September 22–24, 1975, Framingham, MA
On the semantics of the relational data model
SIGMOD '75 Proceedings of the 1975 ACM SIGMOD international conference on Management of data
A unified approach to functional dependencies and relations
SIGMOD '75 Proceedings of the 1975 ACM SIGMOD international conference on Management of data
Hi-index | 0.00 |
In the three-level approach to data description, the conceptual or information level is supposed to provide a data independent model of the enterprise's information. It may be useful to examine the conceptual model in this liqht primarily, rather than as an extension of traditional data processing technology.