Application Architecture and Modeling This chapter teaches you techniques for designing the overall information system application architecture with a focus on physical process models. Information application architecture and physical process modeling include techniques for distributing knowledge, processes, and communications to network locations in a distributed computing environment. Physical data flow diagrams are used to document the architecture and design in terms of design units—cohesive collections of data and processes at specific locations—that can be designed, prototyped, or constructed in greater detail and subsequently implemented as stand-alone subsystems. You will know that you understand application architecture and process design when you can: Define an information system's architecture in terms of KNOWLEDGE, PROCESSES, and COMMUNICATIONS- the building blocks of all information systems. Consistent with modern trends, these building blocks will be distributed across a NETWORK. Differentiate between logical and physical data flow diagrams and explain how physical data flow diagrams are used to model an information system’s architecture. Describe both centralized and distributed computing alternatives for information system design, including various client/server Internet-based computing options. Describe database and data distribution alternatives for information system design. Describe user and system interface alternatives for information system design. Describe various software development environments for information system design. Describe strategies for developing or determining the architecture of an information system. Draw physical data flow diagrams for an information system's architecture and processes.
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