期刊文献+

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
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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.
出处 《西北工业大学学报》 EI CAS CSCD 北大核心 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 )
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 object-oriented DBMS (database management system), query language, Visual Object Query Language (VOQL)
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参考文献3

  • 1[1]Kim W. A Model of Queries for Object-Oriented Databases. Proc 15t h VLDB, Amsterdam: 1989, 423~432
  • 2[2]Auddino A, Amiel E, Bhargava B. Experiences with SUPER: A Database Visual Environment. Proc Database and Expert System Applications, Berlin: 1991, 172~178
  • 3[3]Cattell R G G, et al. The Object Database Standard: DDMG-98. San F rancisco: Morgan Kanfmann, 1994

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