Building cooperative processing applications using SAA
John Tibbetts designed and led the team that built one of the first wave Systems Application Architecture (SAA) applications. He and developers from other inner-circle SAA vendors met on a regular basis to share experiences and trade suggestions and this book represents their accumulated wisdom. Early chapters deal with terminology and ideas--placing the cooperative solution in its historical, sociological and metaphysical context. Introduces VIDOR, the sample cooperative processing application that appears throughout the work as a running illustration for many concepts. Part Two concentrates on SAA-specific material focusing on underlying issues, little-noted nuances and practical implications for cooperative processing. Part Three lays out a number of design principles for multi-platform systems and Part Four shows these design models embodied in concrete bundles of componentry. New and hard to assimilate material is explained through the use of algorithms, pseudocode, demos and detailed
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The Two Worlds
Why Cooperative Processing?
The Culture Clash
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AD/Cycle application models architected back end build capsule transaction cessing Chapter CICS CICS/OS2 client client/server COBOL community machine cooperative processing applications cooperative processing system CPIC customers desktop Dialog Distributed Data Access distributed database Distributed Function Distributed Presentation distribution models dumb terminal environment example Figure formset front end function dispatcher Graphical graphical user interfaces handle hardware HLLAPI host Hydra icon implemented integrity interactions Interoperability LAN server language layer logic look mainframe ment Micro-mainframe links movie named pipe object-oriented objects OOUI organization paradigm peer-to-peer platforms portability Profile Programming Interface protocols registered trademark Remote procedure call SAA platforms SAA's screen screen-scraper side Skill-Sets Required split standards structure system architecture terminal Terminal emulation tion transaction management Trust Line UI builder untrusted update user interface vendors VIDOR window workstation