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CS403 ASSIGNMENT NO.01 FALL 2010 IS UPLOADED.......DO NOT COPY AS IT JUST TAKE AN IDEA AND MAKE YOUR ASSIGNMENT IN YOUR WORDS.....


solutions:

Context Diagrams at the Project Level
[Image: 387867079_7f190de230.jpg?v=0]

It illustrates the business system, not the computer system. It shows
the input and output data flows to a central process that represents the
business system under analysis. The context diagram defines the scope
of the project.

Project Scope


A Context Diagram confines project scope to an agreed limit by obtaining
agreement from the customer on the data flows that are included in the
scope of a project. The Context Diagram focuses on relationships with
external entities and identifies the information that is exchanged
between these external entities and the business system under review.
The external entities themselves are outside the scope of the project
but the data flows between the entities and the business system are
within the project scope.

Level of Detail

The Context Diagram at the project level is the root of the Functional
Decomposition at the conceptual level of detail. The Context Diagram is
level zero of the decomposition.
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DFD LEVEL O DIAGRAM FOR DVD ...

[Image: diagram-0-dfd11.jpg]
..............

DVD Rental System - 0 DFD


[Image: dvdrentingsystemlevel0.jpg]


Context Diagram

[Image: contextdiagram1.jpg]

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