Towards a formal semantics and inference rules for conceptual data models
A new-from a theoretical point of view-approach to expressing data- or knowledge base semantics is described: the universe of...
Extending ERD modeling notation to fuzzy management of GIS data files
Geographic information systems manage a wide variety of data. Some of these data are stored in traditional databases, but much...
Efficient data retrieval and manipulation using Boolean entity lattice
This paper proposes a technique to organize the database such that retrievals and manipulations will be operated on a...
An ontology based approach to the integration of entity–relationship schemas
In schema integration, schematic discrepancies occur when data in one database correspond to metadata in another. We explicitly declare...
On the design and maintenance of optimized relational representations of entity-relationship schemas
A method for obtaining optimized relational representations of database conceptual schemas in an extended entity-relationship model is first proposed....
View integration of behavior in object-oriented databases
Database schemas are often not de®ned by a single person but by several future users of the database who...
Analysis of binary/ternary cardinality combinations in entityrelationship modeling
In this paper, we discuss the simultaneous existence, and relationships, between binary and ternary relationships in entity-relationship (ER) modeling....
Hyper-semantic data modeling
This paper describes a new area of data modeling, a model in this new area, and the schema specification...
The category concept: An extension to’the entity-relationship model
An enhanced version of the Entity-Relationship (ER) data model called the Entity-CategoryRelationship (ECR) data model is presented. The principal...
A persistent complex object database language
To support a number of emerging applications we propose a persistent complex object database language which is "'value" based....
