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Web Transactions Class Diagram Software Design Example

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Text in this example:

UML Class Diagram: Web Transactions
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Search Engine Page
attributes
operations()
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Item
productName: String
productID: double
productNumber: float
qty: int
cost: int //in dollars
totalCost: int //in dollars
costConvert(type, rate): int
computeTotal(....)
ShoppingCart
currency: type
amount: int
numOfItems: int
shipping: int //set shipping
tax: int
subTotal: int
total: int
updateCart(): void
updateTotal():int
refreshScreen(): void
currencyConvert(type, rate): int
SearchResults
E-commerce MainPage