ORL: an object retrieval language interface to an object algebra

[1992] Proceedings. The Sixteenth Annual International Computer Software and Applications Conference Pub Date : 1992-09-21 DOI:10.1109/CMPSAC.1992.217572

S. Urban, Chiung-hsun Chen Lai, S. Saxena

引用次数: 1

Abstract

The authors present the design of ORL, an object retrieval language interface to the EQUAL object algebra. ORL has an extended SQL syntax and is implemented on top of the ONTOS object-oriented database system. The complete system provides an interactive query facility as an alternative to the programatic OSQL interface provided by ONTOS. In general, ORL provides a more concise, user-friendly approach to the expression of queries over objects than the object algebra on which it is based. The translation of ORL queries to their equivalent object algebra expressions is described.<>

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对象代数的对象检索语言接口

提出了面向EQUAL对象代数的对象检索语言接口ORL的设计。ORL具有扩展的SQL语法，并在ONTOS面向对象数据库系统之上实现。完整的系统提供了一个交互式查询功能，作为ONTOS提供的编程OSQL接口的替代方案。一般来说，ORL提供了一种比它所基于的对象代数更简洁、用户友好的方法来表达对对象的查询。描述了将ORL查询转换为其等效对象代数表达式的过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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[1992] Proceedings. The Sixteenth Annual International Computer Software and Applications Conference

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