By Michael L. Brodie (auth.), Alexander T. Borgida, Vinay K. Chaudhri, Paolo Giorgini, Eric S. Yu (eds.)
This Festschrift quantity, released in honor of John Mylopoulos at the social gathering of his retirement from the collage of Toronto, comprises 25 top of the range papers, written by way of best scientists within the box of conceptual modeling.
The quantity has been divided into six sections. the 1st part makes a speciality of the principles of conceptual modeling and includes fabric on ontologies and information illustration. The 4 sections on software program and requisites engineering, details platforms, details integration, and internet and companies, characterize the manager present software domain names of conceptual modeling. eventually, the part on implementations concentrates on initiatives that construct instruments to help conceptual modeling. With its in-depth assurance of various subject matters, this publication can be a priceless spouse to a direction on conceptual modeling.
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Additional resources for Conceptual Modeling: Foundations and Applications: Essays in Honor of John Mylopoulos
When object migration combines with timestamping we talk about Status Classes. In this case we specify constraints on the membership of an object in a class by splitting it into periods according to a given classiﬁcation criterion. , the manager has left the company) . The notion of status for classes allows also for a ﬁne grained notion of lifecycle which can now depend on the membership to a particular status of a class. Evolution-related knowledge may be conveyed also through relationships.
The advantage of associating a set-theoretic semantics to a language is not only to clarify the meaning of the language constructors but also to give a semantic deﬁnition to relevant modelling notions. In particular, we are able to give a rigorous deﬁnition to the notions of: schema satisﬁability – when a schema admits a non empty interpretation which guarantees that the constraints expressed by the schema are not contradictory; class and relationships satisﬁability – when a class or a relation admits at least an interpretation in which it is not empty; logical implication when a new (temporal) constraint is necessarily true in a schema even if not explicitly mentioned; and ﬁnally the special case of logical implication involving subsumption between classes (resp.
Participants of snapshot relationships are snapshot when they participate at least once in the relationship. 5. A relationship is temporary if one of the participating classes is temporary. On the other hand, nothing can be said about subclasses of snapshot or unmarked classes and classes participating to temporary or unmarked relationships: they can be snapshot, temporary, or unmarked classes. Since the domain of an attribute is not restricted to the classes they are attached to, the temporal behaviour of a class is independent of that of its attributes.