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  1. #1
    Join Date
    Dec 2015

    Computer store inventory system help.

    So far I have created the ER-model and I have those entities:

    Now, when I want to do the physical design I'm confused on how to do transactions. the doctor told me to add invoice entity but how to make the database work?
    I mean how to create an invoice for a customer?

  2. #2
    Join Date
    Nov 2004
    out on a limb
    You need
    A customer
    An invoice / order
    Invoice / order details, including product type(s) and quantity(ies) ordered ordered, agreed price and or discount
    If required you may slso need payments deluveries and si on...
    I'd rather be riding on the Tiger 800 or the Norton

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