Titlebook: Conceptual Modeling of Information Systems; Antoni Olivé Textbook 2007 Springer-Verlag Berlin Heidelberg 2007 Conceptual Modeling.Domain E

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Derived Types,tly represented in an information base, while those of derived and hybrid types may be inferred by an information system, using derivation rules. Derivation rules are domain knowledge that an information system needs in order to derive certain facts; this knowledge must therefore be described in the

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Integrity Constraints, be classified from several points of view. These classifications help us in understanding the nature of integrity constraints. Section 9.3 describes the definition of static constraints in logic and in UML. In general, integrity constraints are very diverse, but there are some particular kinds that

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Taxonomies,cial relationship, an . relationship, between entity types (and, in general, between concepts). . relationships are constraints. Entity types and their . relationships form a network structure called a taxonomy. Taxonomies are a very important part of conceptual schemas, and the objective of this ch

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