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Abstract
The CBConnector Bank is a sample bank application developed for Component Broker Connector Release 1.2. This redbook explains how the CBConnector Bank application was developed, from object model to installed Business Objects. The book is part of the International Technical Support Organization's (ITSO) IBM CBConnector Cookbook Collection.
Component Broker Connector (CBConnector) is a new member of the IBM Transaction Series product family that supports distributed object computing in a multitier environment. CBConnector provides a middle-tier application that allows Business Objects to be highly managed and integrated with back-end databases and transactional systems. Different types of first-tier clients can access the middle-tier Business Objects. The middle tier essentially includes middleware that provides clients with an object-oriented rendering of other middleware. In this regard, CBConnector is not a stand-alone product, but instead, is designed to work with existing resource managers that provide persistence, concurrency control, and other services needed in commercial computing environments.
CBConnector is composed of an industry-leading set of technologies that facilitate distributed object applications. As the only solution of its kind on the market today, it combines three critical dimensions:
Runtime
Systems Management
Development
Component Broker consists of two parts that support these three dimensions. CBConnector provides the runtime environment and supports systems management. The Component Broker Toolkit (CBToolkit) contains the tools that application developers use to define and implement the objects running on the middle tier.
CBConnector's unique value lies in its ability to integrate and therefore leverage existing enterprise transactions and data. It will most often be used to extend existing business models.
We developed the CBConnector Bank as an application that demonstrates the capabilities of Component Broker Release 1.2. This application will grow to encompass the new functionality of subsequent releases of Component Broker.
The application has three tiers: the client tier, the middle tier which is the Component Broker server, and the legacy tier, where a CICS application resides. We call this the "legacy system" in quotes since it is a newly developed system, one whose sole purpose is to act as a persistent store to the bank application. However, this tier would normally be an existing application to be integrated into the new, object-oriented architecture that Component Broker represents.
This redbook provides a detailed description of how we implemented the three tiers and discusses the CBConnector-specific issues and concerns we encountered during this development.
System Engineers who already have a basic understanding of Component Broker concepts can use this book as a stepping stone to go from our samples to develop more complex, real-life applications.
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