1. Compare and contrast the purpose of and techniques used in drawing physical DFDs and logical...

Question

1. Compare and contrast the purpose of and techniques used in drawing physical DFDs and logical DFDs.

2. “If we document a system with a systems flowchart, data flow diagrams, and E-R diagrams, we have over-documented the system.” Discuss.

Robert · Accepted Answer

Answer1: 
Characteristics of 
Designing 
Logical  Physical 
Model Depiction It state that operations of 
business i.e., where and how 
the company will operates 
Its state that how the current 
methods or systemic 
operation of the business 
Process representation It state that activities of the 
business 
It state that procedures of 
manual work,

1. Compare and contrast the purpose of and techniques used in drawing physical DFDs and logical DFDs. 2. “If we document a system with a systems flowchart, data flow diagrams, and E-R diagrams, we...

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