Analysis of binary relationships within ternary relationships in ER modeling
In this paper, we discuss which binary relationship cardinalities are permitted within ternary relationships, during ER modeling. We develop...
Searching for compositions in ER schemes
Absence of redundancy is an important quality of ER schemata. Adequate treatment of derivable data, in addition to observing...
Using conceptual graph theory to support schema integration
Two major problems in schema integration are to identify correspondences between different conceptual schemas and to verify that the...
Leveled entity relationship model
Layering ER diagrams has been a key tool to abstract the complexity of large data schemas generated by enterprise...
Formalised conceptual models as a foundation of information systems development
The more application semantics are added to a conceptual model, the greater the portion of the respective application system...
Abstraction levels for entity-relationship schemas
Schema abstraction is essential in different phases of the design process. During development, it supports browsing of repositories storing...
Coordination system modelling
We describe an approach to the coordination of application systems through the modelling and maintenance of inter-system dependencies based...
Virtual structures — A technique for supporting scientific database applications
Amazonia is based on a comprehensive model that includes a characterization of the development, representation, and evaluation of the...
Resolving fragmentation conflicts in schema integration
Research on schema integration leads to the identification of many different conflict types. Some of them received much attention...
An executable meta model for re-engineering of database schemas
A logical database schema, e.g. a relational one, is an implementation of a specification, e.g. an entity-relationship diagram. Upcoming...
