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Database Middleware and Web Services for Data Distribution and Integration in Distributed Heterogeneous Database Systems

机译:数据库中间件和Web服务,用于分布式异构数据库系统中的数据分发和集成

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摘要

As the database environment changing, database is no longer accessed only by using SQL to communicate with DBMS as in the two-tier client-server architecture. In modern enterprise distributed systems, applications are developed and deployed as components in n-tier architecture. Database system is integrated with related applications and can only be accessed via interfaces provided by the application server or middleware. Moreover, in most of the middleware systems such as CORBA, J2EE, and RPC, clients and servers are tightly-coupled and client applications can only invoke methods by using proprietary communication protocols. As a consequence, data integration is no longer achievable by applying existing database middleware systems. What we dealing now are not just different DBMS vendors, dialects of SQL, or variants of data models, but also heterogeneous interfaces and communication protocols defined in various distributed paradigms. In this paper, we propose ADIM, an autonomous data integration middleware, with WebService for data integration in heterogeneous environments.
机译:随着数据库环境的变化,不再像两层客户端-服务器体系结构那样仅通过使用SQL与DBMS进行通信来访问数据库。在现代企业分布式系统中,应用程序是作为n层体系结构中的组件开发和部署的。数据库系统与相关应用程序集成在一起,并且只能通过应用程序服务器或中间件提供的接口进行访问。此外,在大多数中间件系统(例如CORBA,J2EE和RPC)中,客户端和服务器是紧密耦合的,并且客户端应用程序只能使用专有的通信协议来调用方法。结果,不再可以通过应用现有的数据库中间件系统来实现数据集成。我们现在要处理的不仅是不同的DBMS供应商,SQL的方言或数据模型的变体,而且还包括各种分布式范例中定义的异构接口和通信协议。在本文中,我们提出了ADIM,一种自主的数据集成中间件,它具有WebService,用于异构环境中的数据集成。

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