Applying the principle of dynamic programming and geometry knowledge related , the models were based respectively on factor of connectivity , location and policy . then these models were implemented by three key technologies : object - oriented technology of vc + + , second - developed technology of mapg1s and integration method of close coupling 并在此基础上，以实现图斑定积分割的自动化为目的，选择将vc + +的面向对象编程技术与mapgis的二次开发技术有机结合，并采用紧耦合的方式进行了决策模型和mapgis系统平台的有机集成。
This paper discusses metadata , xml , metadata interoperability , tightly coupled integration , loosely coupled integration and z29 . 50 protocol in detail . based on the analysis , this paper presents a new integrated retrieval system model , which can easily integrate existing retrieval systems . finally , an implementation of integrated retrieval system in xidian university library is presented 本论文首先对统一检索系统涉及到的元数据、 xml语言和元数据的互操作等问题进行了详细的分析，接着对比分析了紧耦合的集成技术和松耦合的集成技术，然后采用java技术结合mvc设计模式提出了一种新的统一检索模型： servlet + jsp + javabean模型。
