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

Publications

Semantic interoperability of multitemporal relational databases

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Interoperability is concerned with the interaction of databases of different kinds. In this paper we consider semantic interoperability between...

Modeling time: Adequacy of three distinct time concepts for temporal databases

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In this paper we present newly elaborated time concepts for precise and lossless information preservation in temporal databases. First...

Towards a unifying logic formalism for semantic data models

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In the paper we look for the solution of two problems: the unification of various paradigms of semantic database...

Enhancing the quality of conceptual database specifications through validation

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In this article, we present a validation approach and method to support the development of database applications. We explain...

Integration of heterogeneous object schemas

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In a heterogeneous database system which consists of object databases, a global schema created by integrating schemas of the...

Functional dependencies generalized for temporal databases that include object-identity

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Normalization theory for relational databases is based on the construct of functional dependency. In this paper, we extend the...

The role of meta models in federating system modelling techniques

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Given the large number of system modelling techniques currently available, and the continual need to develop new and improved...

Temporal extensions to a uniform behavioral object model

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We define temporal extensions to a uniform, behavioral and functional object model by providing an extensible set of structural...

TOOSQL- a temporal object-oriented query language

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This paper proposes a temporal, object-oriented query language called TOOSQL which has an SQL-like syntax and compares it with...

A taxonomy for schema versioning based on the relational and Entity Relationship Models

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Recently there has been increasing interest in both the problems and the potential of accommodating evolving schema in databases,...