Abstract: The objective of information-sharing mechanism is to joint the database servers and offer service for the external with a unified view. This paper presents a distributed database nodes autonomy sharing model based on data integration theory and blackboard model. Overall pattern, information pattern management and data replication type concept is proposed. It analyzes and realizes the model of the structure and operation mechanism. Its main ideas are useful to the realization of database server groups.

Key words: data integration, blackboard model, overall view, data sharing

摘要： 信息共享机制的实质是将各数据库服务器进行有效的组合，以一种统一的视图对外提供服务。该文结合数据集成的理念，基于黑板模式，提出一种基于节点自治的分布式数据库共享模型，给出全局模式、模式信息管理和数据复制类型等概念，分析模型的结构和运行机理，对其进行实现。该研究思路对其他服务器群的实现具有借鉴意义。

关键词: 数据集成, 黑板模式, 全局视图, 数据共享

CLC Number: 

• TP311.13