Results 291 to 300 of about 219,507 (323)

Database Conceptual Schema Matching

Computer, 2007
A database conceptual schema is a high-level description of how database concepts are organized, which is typically as classes of objects and their attributes. A fundamental operation in many database applications, schema matching involves finding a mapping mu between the concepts in a source scheme S and the concepts in a target schema T such that, if
Marco A. Casanova, Karin K. Breitman, Daniela F. Brauner, André L.A. Marins   +3 more
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Conceptual schema for CAD

Computer-Aided Design, 1977
Abstract A conceptual schema and the associated concepts of entities, attributes, relations and consistency constraints established during the 1976 IFIP TC-2 conference are applied to engineering computer-aided design. Additional concepts of multiple hierarchies of models, structural versions, design control, design analysis and synthesis are ...
B.Suzanne Armitage, P.A.V. Hall
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Classifying and reusing conceptual schemas

1992
The paper presents a methodological approach to guide the application engineer to construct a Library of Entity-Relationship schemas, classified by means of indexing criteria and clustering techniques, and to extract reusable components from the existing selected schemas. Reusable components are defined as generic entities with associated meta-entities
S. Castano, DE ANTONELLIS, Valeria, B. Zonta   +2 more
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OO and EER Conceptual Schemas

Journal of Database Management, 1994
A database conceptual schema serves as a communication medium between professional analysts/designers and users who wish to comprehend and validate the conceptual schema. The conceptual schema is usually presented in a diagrammatic form that follows a specific semantic data model. The extended entity-relationship (EER) model is one of the most commonly
Peretz Shoval, Israel Frumermann
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Conceptual modeling of XML schemas

Proceedings of the fifth ACM international workshop on Web information and data management - WIDM '03, 2003
XML has become the standard format for representing structured and semi-structured data on the Web. To describe the structure and content of XML data, several XML schema languages have been proposed. Although being very useful for validating XML documents, an XML schema is not suitable for tasks requiring knowledge about the semantics of the ...
Bernadette Farias Lósio, Ana Carolina Salgado, Luciano do Rêgo GalvĐo   +2 more
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Testing Conceptual Schema Satisfiability

2010
Satisfiability is one of the properties that all conceptual schemas must have. Satisfiability applies to both the structural and the behavioral parts of a conceptual schema. Structurally, a conceptual schema is satisfiable if each base or derived entity and relationship type of the schema may have a non-empty population at certain time. Behaviorally, a
Antoni Olivé, Albert Tort
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Automated conceptual schema restructuring

[1988] Proceedings of the Twenty-First Annual Hawaii International Conference on System Sciences. Volume II: Software track, 2003
The development of a conceptual model in database design is considered. An approach is described that borrows the AI (artificial intelligence) technique of plan generation to build a computer aid for conceptual schema restructuring in the context of view integration.
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Semantic integration of conceptual schemas

Data & Knowledge Engineering, 1997
Summary: Our goal is to work out an integration process which makes it possible to give a global design schema obtained from several schemas, each of them describing the same reality viewed in different ways, in order to obtain the fullest view. Problems and conflicts arise during the schema integration. They are due to the several ways of representing
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Consciousness and conceptual schema

2001
There are two importantly different ways in which consciousness resists incorporation into our familiar object-based conceptual schema which, when analysed, help to explain why it is regarded as such a philosophically recalcitrant phenomena. One concerns the nonconceptual nature of basic forms of conscious experience.
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XML schema re-engineering using a conceptual schema approach

International Conference on Information Technology: Coding and Computing (ITCC'05) - Volume II, 2005
At present, the Extensible Markup Language (XML) is popular for both data presentation and data transfer activities. XML Documents follow XML Schemas. It is possible to use them as database schemas and databases. An XML Schema can be hierarchical or flat. The hierarchical one is normally used for data presentation and the flat one is for data transfer.
O.Y. Yuliana, S. Chittayasothorn
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