一种OODBMS的直观对象查询语言的研究与实现  

A Visual Object Query Language for Object-Oriented DBMS

作　　者：聂培尧[1] 李战怀[1] 胡正国[1] 

机构地区：[1]西北工业大学计算机科学与工程系,陕西西安710072

出　　处：《西北工业大学学报》2001年第4期629-633,共5页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金 (6 0 0 730 5 5 )

摘　　要：论述了一种面向对象的数据库管理系统的直观对象查询语言。这种基于图形的查询语言可支持图表式查询语言的定义和说明 ,因此这种语言既有基于文本的结构查询语言的表达能力 ,也具有基于图形查询语言的直观性。It is well known that object-oriented DBMS (database management system) can provide a rich expressive power for the query languages to meet various needs of some high-level database applications. Unfortunately this expressive power requires the users to be highly skilled to query a database. Therefore, we present a Visual Object Query Language (VOQL), a graph-based query language that supports diagram-based declarative query specification methods for object-oriented DBMS. The primary objective of VOQL is to support mixed paradigm, which exploits both the expressive power of text-based structured query languages and the intuitive power of graph-based query languages. In Section 1 we describe the query model used in VOQL, which is based on object query language; Section 2 presents the language definition for VOQL, including both the syntax definition and semantic specifications; some issues concerning VOQL implementation are discussed in Section 3 and finally, in Section 4, conclusions and some further research directions for the VOQL are given.

关 键 词：数据库管理系统 查询语言 直观查询 OODBMS 面向对象 图形查询 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]