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

ER - Intl Conf on Conceptual Modeling

Conceptual Neighbourhood Diagrams for Representing Moving Objects

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The idea of Conceptual Neighbourhood Diagram (CND) has proved its relevance in the areas of qualitative reasoning about time...

A Refined Line-Line Spatial Relationship Model for Spatial Conflict Detection

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In order to detect the spatial conflicts in the process of spatial database updating, a refined description of spatial...

Assessing Topological Consistency for Collapse Operation in Generalization of Spatial Databases

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Generalization of spatial databases consists of complicated operations including not only geometric transformations but also topological changes. The changes...

A Semantic Approach to Query Rewriting for Integrated XML Data

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Query rewriting is a fundamental task in query optimization and data integration. With the advent of the web, there...

Agent Oriented Data Integration

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Data integration is the process by which data from heterogeneous data sources are conceptually integrated into a single cohesive...

A Taxonomy of Inaccurate Summaries and Their Management in OLAP Systems

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Accurate summarizability is an important property in OLAP systems because inaccurate summaries can result in poor decisions. Furthermore, it...

AOSE and Organic Computing – How Can They Benefit from Each Other? Position Paper

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Organic computing is an upcoming research area with strong relationships to the ideas and concepts of agent-based systems. In...

XCM: Conceptual Modeling for Dynamic Domains

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ERM remains the tool of choice for conceptual data modeling. It relies on entities and relations to model the...

Precise Modeling and Verification of Topological Integrity Constraints in Spatial Databases: From an Expressive...

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Recent works underline that the integration of topological relationships into the Object Constraint Language (OCL) is an important field...

Topological Relationships Between Complex Lines and Complex Regions

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Topological relationships between spatial objects in the two-dimensional space have been investigated for a long time in a number...