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›› 1988, Vol. 14 ›› Issue (04): 10-.

• 论文 • 上一篇    下一篇

演绎数据库系统G-DDBS/VMS的研制

吴泉源,葛家翔,邓铁清   

  1. 国防科技大学,国防科技大学,国防科技大学
  • 发布日期:1988-08-25

RESEARCH AND DEVELOPMENT OF THE G-DDBS/VMS DEDUCTIVE DATABASE SYSTEM

Wu Quanyuan   

  • Published:1988-08-25

摘要: 本文就G-DDBS/VMS的体系结构作了分析和说明,提出了一种基于预编译的高效解释方法,讨论了具有鲜明层次性和模块性的内涵数据库的存贮组织及其管理方法,介绍了我们为该系统设计的两种用户查询语言,即基于PROLOG的查询语言PBQL以及近于自然语言的查询语言SQL。对系统的完整性约束问题提出了关于演绎知识的吸收概念以及用元谓词实现吸收的方法。

Abstract: The paper analyses G-DDBS/VMS architecture, proposes a precompila-tion-based interpretive-approach, and discusses the strictly hierarchical and modular organization and management of intensional databases. Two user query languages designed for the system are presented, which are PROLOG-Based Query Language (PBQL) and Structured Query Language (SQL). In order to maintain the integrity of deductive databases, deductive knowledge assimilation and implementation in meta-predicate are introduced.