i need a 0 level dfd for online auction system. it consists of three modules, namely, seller(who is selling the product), buyer( bidder bidding for the product), and an admin.
sellers functionality are to register, pay to upload new product upload new product, view product status, take payment from highest bidder, and ship it to the customer.
buyers functionality are to register, bid, and pay for bid
....etc

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Admin:
Admin is responsible to enter products and details about the products. Admin also able to add operators and assign orders to different operators. Admin have facility to check current order, order status and current registered customers.

Operators:
Operators have facility to check orders assign by admin, also will able to change the status of an order. He might have cancel the orders.

Registered User :
Registered users have facility to purchase the products, getting updates for new produ ....etc

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control flow diagram for om=nline shopping process
....etc

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Hi am srija i would like to get details on dfd diagram for online blood donation system ....etc

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DFD and ER daigram of email filtering..... ....etc

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I wand ER diagrams of my online shopping and bidding application project so please give the diagrams of project.......
....etc

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I want an er diagram for online shopping store ....etc

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dfd for bank containing Functions like new account entry,deposite money,withdraw money ....etc

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and also 1st level dfd and 2nd level dfd ....etc

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