On complex objects and versioning in complex environments
Many current extended entity relationship (EER) models lack the support for complex objects, versioning and slightly explore the aggregation...
An overview of the Lawrence Berkeley Laboratory extended entity-relationship database tools
In this paper we briefly overview a suite of tools developed at Lawrence Berkeley Laboratory (LBL) for aiding users...
Application and system prototyping via an extensible object-oriented environment
Due to the various requirements of nontraditional applications, extensibility of database management systems has become a theme for several...
Organisational and information system modelling for information systems requirements determination
Information system development lacks support for the organisational modelling and analysis which should be carried out prior to or...
What makes a good data model? Evaluating the quality of entity relationship models
This paper develops a framework for evaluating the quality of data models and choosing between alternative representations of requirements....
Database evolution: the DB-MAIN approach
The paper analyses some of the practical problems that arise when the requirements of an information system evolve, and...
Database schema evolution through the specification and maintenance of changes on entities and relationships
A flexible database system needs to support changes to its schema in order to facilitate the requirements of new...
Method restructuring and consistency checking for object-oriented schemas
In this paper we present a framework and algorithms for method evolution handling in object-oriented databases. Two levels of...
State-conditioned semantics in databases
Integrity constraints are usually modeled based on the assumption that they are valid in any database state. This approach...
Modelling constraints with exceptions in object-oriented databases
This paper deals with modelling constraints in object-oriented databases, with emphasis given on exceptions. Constraints are restrictions on properties...
