planning - designing - developing IT
Special Interest Group on Systems Analysis and Design

Publications

Resolving constraint conflicts in the integration of entity-relationship schemas

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In this work, we address the problem of constraint conflicts while integrating the conceptual schemas of multiple autonomous databases...

Data model for customizing db schemas based on business policies

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One of the goals of data modeling has been to uniquely identify the data semantics of target applications and...

A formal framework for er schema transformation

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Several methodologies for semantic schema integration have been proposed in the literature, often using some variant of the ER...

Explaining conceptual models — An architecture and design principles

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An important activity in requirements engineering is validation, which is the process of checking whether a model correctly represents...

Extending an object-oriented model: Multiple class objects

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Experiences of both researchers and practitioners with the development of object-oriented database systems help us to evaluate the real...

Formal approach to metamodeling: A generic object-oriented perspective

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Formal methods and metamodeling are promising ways to cope with the ever increasing size and complexity of modern software...

Associations and roles in object-oriented modeling

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We present an extended ER model with entity, role, and association as the basic constructs for object-oriented modeling. The...

Property covering: A powerful construct for schema derivations

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Covering is a well-known relationship in semantic and object-oriented models that holds when a class is the union of...

Inheritance graph hierarchy construction using rectangular decomposition of a binary relation and designer feedback

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Inheritance is the main theme of schema design for the object-oriented software and object oriented database . It supports...

Towards an object database approach for managing concept lattices

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The concept lattice is a conceptual model firstly introduced by Wille in formal concept analysis, a theory of concept...