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

Publications

Detecting summarizability in OLAP

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The industry trend towards self-service business intelligence is impeded by the absence, in commercially-available information systems, of automated identification...

Complete rules for n-ary relationship cardinality constraints

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An extended approach is presented for modeling data relationships that involve multiple entities. This approach unifies the relationship cardinality...

CLIPS–OWL: A framework for providing object-oriented extensional ontology queries in a production rule engine

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In this paper, we define a framework, namely CLIPS–OWL, for enabling the CLIPS production rule engine to represent the...

Reducing the search space for conceptual schema transformation

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In this paper we focus on the transformation of a conceptual schema into an internal schema. For a given...

Temporal and versioning model for schema evolution in object-oriented databases

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In this paper we define the Temporal and Versioning Model for Schema Evolution (TVSE), a model that uses time...

ROVER: flexible yet consistent evolution of relationships

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Relationships have been repeatedly identified as an important object-oriented modeling construct. Most emerging modeling standards such as the object...

Formal deadlock elimination in an object oriented conceptual schema

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Object oriented models model structural and behavioural aspects of objects in the Universe of Discourse. As the dynamic aspects...

Consistency enforcement in Entity-Relationship and object-oriented models

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Integrity Maintenance is considered one of the major application fields of rule triggering systems (RTSs). Whenever a given integrity...

Decomposing relationship types by pivoting and schema equivalence

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In the relational data model, the problem of data redundancy has been successfully tackled via decomposition. In advanced data...

View-based model-driven architecture for enhancing maintainability of data access services

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In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services...