SYSTEMS DEVELOPMENT ANALYSIS
ANALYSIS AND DESIGN TOOLS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To identify the top level functions by combining many smaller components into a single entity
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To prepare flow chart after programming has been completed
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To identify a top level function and then create a hierarchy of lower-level modules and components
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ALL of the above
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Detailed explanation-1: -Top-Down Approach. In the top-down design approach, the whole system is successively partitioned into a hierarchy of subsystems. On the top level a behavioral description is used. This description is partitioned into a structural description with behavioral descriptions of the components.
Detailed explanation-2: -A top-down approach is used when management wants to improve overall reliability and/or does not know what the principal causes of problems may be.
Detailed explanation-3: -In the top-down approach, a complex algorithm is broken down into smaller fragments, better known as ‘modules. ‘ These modules are then further broken down into smaller fragments until they can no longer be fragmented. This process is called ‘modularization.
Detailed explanation-4: -Top-Down Design, is characterized by an extensive planning and research phase that leads into the development of a product. Bottom-Up Design, takes the opposite approach. While goals for a product are still outlined, the assembly of a product is done on a system by system basis.