aggregation, association, inheritance? what to use with these tables

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i have following normalized forms

Invoice table
invoiceNo
invoiceDate

InvoiceProduct table
invoiceNo
ProductNo
Price
Qty

InvoiceProductExp table
invoiceNo
ProductNo
InvoiceProductExpNo
ProductExpQty
ExpDate

Invoice has many Products
a Product has many expiry details

now i want to draw class diagrams
i don't know what relationship to use; aggregation, association, inheritance?

Posted 1-Jul-13 17:53pm

deva936

Updated 1-Jul-13 17:54pm

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