Physical_design

Physical_design - Physical System Design The General...

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    Physical System Design
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    The General Objectives of Physical System Design Determine which processes will be implemented as a: Computer process Manual process Based on response time requirements, establish which process is a: Batch process On-line process Determine the alternatives for information system design: Centralized Distributed computing
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    The General Objectives of Physical System Design Determine type of data storage technology to be used. Tape Disk Consider the make versus buy (COTS) alternatives for application programs If software programs are to be developed, which technology will be used? e.g. C ++ , Visual Basic, . .etc. Consider the applicability of the various networking technologies (LAN, WAN) and their implications in information system design.
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    Physical Data Flow Diagrams Physical data flow diagrams serve as A technical blueprint for the implementation phase. A model to communicate technical and other design decisions to those who will actually implement the system
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    Physical Data Flow Diagrams Physical DFDs use the same shapes and connections as logical DFDs Processes External agents Data stores Data flows Only the naming standards (plus a few new rules) are changed to extend the language to document technology and design decisions .
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This note was uploaded on 02/28/2011 for the course BMGT 407 taught by Professor Staff during the Spring '08 term at Maryland.

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Physical_design - Physical System Design The General...

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