基于演绎对象/关系属性的演绎面向对象数据库查询语言  

Query Language of Deductive Object-oriented Database Based-on Deductive Object/relation Attribute

作　　者：刘宇鹏 郝忠孝[1] 

机构地区：[1]哈尔滨理工大学计算机与控制学院,黑龙江哈尔滨150080

出　　处：《哈尔滨理工大学学报》2004年第6期97-100,共4页Journal of Harbin University of Science and Technology

摘　　要：为了定义出演绎对象／关系属性的SQL,从原语的角度出发,引入一个演绎对象／关系属性类型的ER图实例.在ER图实例的基础上,用事件监视器应用规则库中的规则对对象／关系类进行演绎,产生演绎对象／关系属性类型.在G有的SQL的基础上,用演绎对象／关系属性的SQL实现了演绎对象属性类型的形式化查询实例,并分析了面向对象子语言对演绎对象属性的DOOD支持.From the primitive, this paper introduces an instance of ER graph which is type of a deductive object/relation attribute in order to define deductive object/relation attribute' s SQL. Based -on ER graph instance, event monitor which applies rules in rule database deducts the object/relation type and produces deductive object/relation attribute type.Based -on existing SQL, this paper defines and applies DAOSQL to implement formal query instance, and analyzes the supportability of object-oriented language to DOOD of deductive object attribute.

关 键 词：原语 实际对象/关系类型 演绎对象/关系属性类型 规则 演绎对象/关系属性的SQL 

分 类 号：TP311.132[自动化与计算机技术—计算机软件与理论]