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Implementation of PDCC at the Rochester laboratory has led to an increase in programmer productivity because of a reduction in application coding, easier program maintenance, and ease of change. User response has been good. The user's requirements have been met in terms of customization of displays and capabilities, authenticity and consistency of data, and ease of use in a display-work-station environment. The system is extendable to new segments, data bases, and applications. Instead of trying to anticipate future requirements, PDCC defines variable data in rules which are external to the processing modules. The system's application independent modules can interpret the various rules to provide dynamic and flexible transaction processing. Rules stored in data bases can be updated dynamically by an authorized user and be effective immediately.
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