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New Post 11/30/2008 9:57 AM
User is offline Roger
15 posts
9th Level Poster


Information Flow Diagram 

Hi All- I am doing requirement gathering for the TO BE process. I need to do Information Flow Diagram for the TO BE designs, Can any one give me an example of what it is what it need to be covered like external and internal entities?. I never done information flow diagrams till now

 

Roger

 
New Post 11/30/2008 6:11 PM
User is offline KJ
243 posts
6th Level Poster


Re: Information Flow Diagram 

Roger,

I'm a little confused, you refer to requirements and TO-BE PROCESSES. Then you refer to TO-BE DESIGNs. Clarify please!

Do you mean data flow diagrams or do you mean information flow in the context of UML Activity diagrams?

Till later.

warm regards,

 
New Post 12/1/2008 6:18 AM
User is offline Tony Markos
493 posts
5th Level Poster


Re: Information Flow Diagram 

HI:

Data flow diagrams are information flow diagrams.   Only data flow diagrams capture the flow of data (i.e., information).  Use cases and activity diagrams are essentially data flow diagrams without the data flows. 

When I took the Yourdon course on data flow diagramming, they taught us that ninty eight percent (98%) of the required work is AS-IS modeling.  The other 2% includes TO-BE modeling.   While that stat may be extreme, I have found that  when I have an adequate understanding of the AS-IS, the TO-BE is very straight forward.   If you are wondering how to do a TO-BE, I will bet a good buck that the real issue is not understanding tha AS-IS.

Problem:  Management often tends to see AS-IS analysis as largely a a waste of money: after all, the TO-BE is what drives a solution. 

Tony

 
New Post 12/1/2008 5:37 PM
User is offline Roger
15 posts
9th Level Poster


Re: Information Flow Diagram 

Hi K,  Am refering to the BRD TO-BE Process , Information Flow Diagram

 
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