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DOI:
Journal of Software:1997.8(9):687-693

一个用于异构的数据库集成的多context逻辑
刘海燕,陈火旺,刘凤岐
(长沙国防科技大学计算机系,长沙,410073)
A MULTICONTEXT LOGIC USED FOR INTEGRATING HETEROGENEOUS DATABASES
LIU Haiyan,CHEN Huowang,LIU Fengqi
()
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    Revised:November 13, 1996
> 中文摘要: Internet的发展要求能同时使用来自不同知识源的信息.本文定义了一个两层的多con-text逻辑结构DBCL.第1层的每个context都是一个传统的多类逻辑理论,对应于一个数据库;第2层的context是个特殊的多类逻辑理论,可以声明第1层中各context间的各种联系,DBCL为异构的数据库的集成提供了一个形式化描述.本文还为DBCL定义了一类可靠且完备的语义解释.
中文关键词: 数据库  集成  context  多类逻辑  异构的
Abstract:To use information from different sources together is a desirable property for the users.especially in these internet days.A two-level multicontext architecture DBCL iS defined in this paper which can be used to integrate heterogeneous databases.Each context in its first level iS a classical many-sorted theory,which corresponds to a database.The context in the second level is a generalized many-sorted theory,where metatheories about the various relations among databases can be stated.A kind of semantics,with respect to which DBCL is sound as well as complete,is also provided in this paper.
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基金项目:本文研究得到国家863高科技项目基金资助. 本文研究得到国家863高科技项目基金资助.
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刘海燕,陈火旺,刘凤岐.一个用于异构的数据库集成的多context逻辑.软件学报,1997,8(9):687-693

LIU Haiyan,CHEN Huowang,LIU Fengqi.A MULTICONTEXT LOGIC USED FOR INTEGRATING HETEROGENEOUS DATABASES.Journal of Software,1997,8(9):687-693