面向对象知识库系统CAOBS/V1.2的可视化查询子系统

VISUAL QUERY SUBSYSTEM OF THE OBJECT ORIENTED KNOWLEDGE BASE SYSTEM CAOBS/V1 2

面向对象知识库系统ＣＡＯＢＳ／Ｖ１．２的用户界面是一个可视化知识查询子系统，它包括一个灵活、直观、方便的可视知识查询语言（ＶＫＱＬ）和一个知识库浏览编辑器．利用该可视化查询语言，用户可以通过构造查询图来表达查询要求，并最终实现查询功能．ＶＫＱＬ吸收了国际上现有的几种可视查询语言的优点，具有较强的查询功能，使用方便．文中介绍了ＶＫＱＬ的设计思想和实现技术，在最后一节将ＶＫＱＬ与同类查询语言进行了对比．

The user interface of the object oriented knowledge base system CAOBS/V1 2 is a visual query subsystem which composes a visual knowledge query language(VKQL),and a knowledge base browser/editor.With the visual query language,the user can express his query requirements by constructing query graph.VKQL absorbs the key features of other visual query languages,and owns its specific functions.The design and implementation of VKQL are described in the paper.And at the final section,VKQL is compared with other similar query languages in the world.