Modeling and system maintenance
This paper reports on recent work and directions in modern software architectures and their formal models with respect to...
Benefits and quality of data modelling — Results of an empirical analysis
In this paper the results of an empirical study about benefits and quality of data modelling are presented. The...
Adaptive schema design and evaluation in an object-oriented information system
This paper develops a formal framework for characterizing “normalization” in object-oriented schema design. We introduce style rules for achieving...
Schema design and knowledge discovery
Knowledge discovery in databases (KDD), often also referred to as data mining, aims at the discovery of useful information...
Decomposition of relationships through pivoting
In the literature there are several proposals to map entity-relationship schemas onto object-oriented schemas, but they only treat relationship...
Understanding the implementation of IS-A relations
Generalization/specialization hierarchies (IS-A relations for short) are basic semantic constructs proposed in most information system conceptual models. At the...
Deductive object oriented schemas
Current Object Oriented (OO) Database schema structures allow isa relationships and multiple inheritance. We extend these structures with features...
Verification problems in conceptual workflow specifications
Most of today's business requirements can only be accomplished through integration of various autonomous systems which were initially designed...
Process knowledge modeling
Knowledge is connected to a subject (a theory, a lesson) but Process Knowledge is connected to an object and...
The conceptual database design optimizer CoDO — Concepts, implementation, application
Traditional database design does not consider operational behavior in detail. In this way, tuning is a frequent requirement after...
