DrawCAD: Using Deductive Object-Relational Databases in CAD
نویسندگان
چکیده
منابع مشابه
Update Control in Deductive Object Bases1
Deductive object bases are a combination of both deductive and objectoriented databases. This dissertation investigates the problem of update control for such databases. The data model is defined as an extreme case of a deductive database with only one extensional predicate and a multitude of axioms defining the object-oriented abstraction concepts. The advantages are twofold: a distinct concep...
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We develop an eecient algorithm for the translation of high-order object queries to rst-order relational queries. The translation utilizes a canonical deductive database as a uniform representation of object-oriented schema and data. Object queries are translated to the canonical deductive database in which they are partially evaluated and optimized, before being translated to relational querie...
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In a nested relational or complex object database, nested tuples and sets are used to represent real world objects. For various reasons, such tuples and sets can be partial or complete. In this paper, we discuss how to support them in deductive databases. In particular, we present a deductive database language RLOG II that supports partial and complete tuples and sets based on Relationlog. This...
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The Relational Data Model and Relational Calculus are extended with Unification and non-recursive Horn Clauses from Logic. The benefits gained include better versatility and a richer functionality for expressing complex Jack, deductive queries and rule-based inJerences. Applications include semantic data models for Databases, frames for Knowledge-based systems, and Complex Objects for CAD. An E...
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Deductive object bases attempt to combine the advantages of deductive relational databases with those of object-oriented models. We review modeling and optimization issues encountered during the development of ConceptBase, a prototype deductive object base supporting the Telos data model. We also report on a number of application experiences in the eld of meta data management. This work was sup...
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عنوان ژورنال:
- Softw., Pract. Exper.
دوره 33 شماره
صفحات -
تاریخ انتشار 2001