Title: ICT A Level ? Module 4 ? SSADM
|Date:||October 10, 2015|
|Length:||2 / 478|
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SSADM uses a combination of text and diagrams throughout the whole life cycle of a system design, from the initial design idea to the actual physical design of the application.
SSADM uses a combination of three techniques:
Logical Data Modeling -- the process of identifying, modeling and documenting the data requirements of the system being designed...
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The data is separated into entities (things about which a business needs to record information) and relationships (the associations between the entities).
Data Flow Modeling -- the process of identifying, modeling and documenting how data moves around an information system. Data Flow Modeling examines processes (activities that transform data from one form to another), data stores (the holding areas for data), external entities (what sends data into a system or receives data from a system, and data flows (routes by which data can flow)...
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