Deductive queries in ODMG databases: the DOQL approach

被引：0

作者：

Sampaio, PRF ^{[1
]}

Paton, NW ^{[1
]}

机构：

[1] Univ Manchester, Dept Comp Sci, Manchester M13 9PL, Lancs, England

来源：

OOIS'98: 1998 INTERNATIONAL CONFERENCE OBJECT ORIENTED INFORMATION SYSTEMS, PROCEEDINGS | 1998年

关键词：

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The Deductive Object Query Language (DOQL) is a rule-based query language designed to provide recursion, aggregates, grouping and virtual collections in the context of an ODMG compliant object database system. This paper provides a description of the constructs supported by DOQL and the algebraic operational semantics induced by DOQL's query translation approach to implementation. The translation consists of a logical rewriting step used to normalise DOQL expressions into molecular forms, and a mapping step that transforms the canonical molecular form into algebraic expressions. The paper thus not only describes a deductive language for use with ODMG databases, but indicates how this language can be implemented using conventional query processing techniques.

引用

页码：57 / 74

页数：18

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