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Abstract

A Component Transaction Server (CTS) is described, which provides a framework for deploying the middle-tier logic of distributed component-based applications. The CTS simplifies the creation and administration of Internet applications that service thousands of simultaneous clients. The CTS components, which execute on the middle-tier between end-user client applications and remote databases, provide efficient management of client sessions, security, threads, third-tier database connections, and transaction flow, without requiring specialized knowledge on the part of the component developer. The system's scalability and platform independence allows one to develop application on inexpensive uniprocessor machines, then deploy the application on an enterprise-grade multiprocessor server. In its Result Set module, the CTS provides tabular result sets, thus making the environment very desirable for business applications. In most component-based systems, a component interface returns an object. CTS components can return either an object or a collection of objects called a 'result set.' The format of a result set is based on the standard ODBC result set, and it is roughly equivalent to a database cursor. Because they return a result set, CTS components are much simpler and more efficient to work with. In this fashion, graphic user interface (GUI) development with CTS is nearly identical to traditional two-tier systems.

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