The Format Model: A Theory of database Organization
Journal of the ACM (JACM)
Database description with SDM: a semantic database model
ACM Transactions on Database Systems (TODS)
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
Database abstractions: aggregation and generalization
ACM Transactions on Database Systems (TODS)
Database abstractions: aggregation
Communications of the ACM
A relational model of data for large shared data banks
Communications of the ACM
Non first normal form relations to represent hierarchically organized data
PODS '84 Proceedings of the 3rd ACM SIGACT-SIGMOD symposium on Principles of database systems
Molecular Objects, Abstract Data Types, and Data Models: A Framework
VLDB '84 Proceedings of the 10th International Conference on Very Large Data Bases
Programming with abstract data types
Proceedings of the ACM SIGPLAN symposium on Very high level languages
| Hi-index | 0.00 |
Traditional database models are not sufficiently expressive for a variety of standard and non-standard database applications. Several models supporting greater abstraction have been proposed to fill this gap, but no one model has gained wide acceptance. This paper defines a model, based on the notion of molecules and non-first normal form relations, that provides a power- ful abstraction mechanism using aggregation. The model also provides a simple pictorial representation that allows a compact and clear specification of a database. We illustrate the model with several examples and show how it can be used in the design of databases.