Data Flow Diagram's

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Ant

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Does anyone know what a DFD would look like for a store such as Amazon, and also an auction house such as eBay.
Im really crap at doing em!

Ta

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Ant
 
Whoa a data flow diagram for Amazon would be huge! It would have loads of levels. At level 0 you would have:

Customer (entity) -------> Amazon (process) <------- Supplier (entity)

Then you would have to split up Amazon System into various levels including Buying / Selling / Refunds / Customer Accounts / Special Offers / Supplier Accounts etc..... that would be a nightmare!
 
Customer -> HTML -> CGI Scripts -> Management/Processing -> Shipping?
 
I'd done the context diagram but yeah you're right its gonna be a bloody nightmare.
 
A2 Computing Coursework.

For the analysis part I need to put in DFD's for current system (eBay) and new system (ECommerce store)

Ive done the store one, just need to do the auction DFD now.
 
Wow.... what Syllabus are you doing? Im doing A2 Computing with Edexcell and the only Data Flow Diagrams I have to do are that of a very simple system for example I am doing  Library System.
 
ah... the cursed AQA. Well EdExcell is relatively easy, but at the moment we are programming in assembly language :weep: and I hate it! I can't see the point in doing it either.... :isee:
 
Ah man tell me about it. We had to do a bit of that even tho it doesn't really feature in the course.
 
Hey, don't knock assembler :wink: It does form the basis for doing *everything* on the computer, so it's not too surprising they want you to know at least a bit about it.

Still gets used nowadays too, remember ... you wouldn't seriously write a whole program in assembler but it can be useful to know it for optimising extremely important code.
 
Yeah yeah.... your sounding like my computing teacher now. But it gets so confusing because it doesn't have sub procedures etc.... you end up with a list of jumps... and jumps within jumps..... and trying to debug it is a nightmare. But yeah it does give you an insight into how the CPU opperates etc. Kinda puts Visual Basic into perspective.... it's a womans laguage compared to Assembly :lol:
 
What do you mean by 'womans language' ? That women are something less ? hm ?

There  are  procedures in assembly, with call and ret. But youre right, it is all messy. But it is good language anyhow.
 
where can i go about getting an assembly compiler type thing? im learning 16bit right now....
 
Try your school, or net. I was working with Turbo Assembler and it was good.

tip: google
 
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