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

Information Systems

MEER—An EER model enhanced with structure methods

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Entity relationship (ER) schemas include cardinality constraints, that restrict the dependencies among entities within a relationship type. The cardinality...

Exploiting fact verbalisation in conceptual information modelling

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An increasing number of approaches to conceptual information modelling use verbalisation techniques as an aid to derive a model...

Transformation of database populations and operations from the conceptual to the internal level

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In this paper we describe a framework for the automatic transformation of databases from the conceptual to the internal...

Design of statistical databases: A methodology for the conceptual step

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The aim of the conceptual step in database design is to describe data involving in the application in a...

A unifying object role modelling theory

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This article presents the idea of defining a kernel for object role modelling techniques, upon which different drawing styles...

Formalizing and validating behavioral models through the event calculus

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Accurate gathering of requirements is a major concern during conceptual modelling. Such accurateness can only be achieved through major...

Visualization of conceptual specifications

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The development of a large information system is generally regarded as one of the most complex activities undertaken by...

A multi-level approach to modeling language extension in the Enterprise Systems Domain

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As the number and diversity of technologies involved in building enterprise systems continues to grow so does the importance...

A framework for expressing semantic relationships between multiple information systems for cooperation

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After many years of information systems development, most private and public organizations are characterized by the presence of multiple...

A role model and its metaclass implementation

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The role generic relationship for conceptual modeling relates a class of objects (e.g., persons) and classes of roles (e.g.,...