Standard transformations for the normalization of ER schemata
Normalization, which makes up the core of the design theory for relational databases, is also considered an important technique...
On the satisfiability of dependency constraints in entity-relationship schemata
The satisfiability problem for a specific class of integrity constraints in data bases, namely the dependency constraints, is studied....
Relational data base design for the intensional aspects of a knowledge base
The paper describes a methodology for designing relational data base schemata for intensional knowledge represented in terms of structured...
A methodology for conceptual documentation and maintenance
The aim of the paper is to present a methodology for documentation and maintenance of conceptual data schemas. It...
On the relational representation of complex specialization structures
The mapping of entity-relationship schemas (ER schemas) that contain complex specialization structures into the relational model requires the use...
Relational database design using the NIAM Conceptual Schema
In this paper we will describe a fact based Conceptual Schema or Semantic Data Model using elementary sentences as...
Tool support for the design and management of context models
A central task in the development of context-aware applications is the modeling and management of complex context information. In...
Ontological query answering under expressive Entity–Relationship schemata
The Entity–Relationship (ER) model is a fundamental tool for database design, recently extended and employed in knowledge representation and...
Modular construction of logic knowledge bases: An algebraic approach
Modularity, reusability, extension capabilities and transformations are among the main facilities that must be considered in knowledge engineering targeted...
A requirements modeling language and its logic
This paper describes some aspects of a Requirements Modeling Language (RML) which can be used in the initial phases...
