1 Define a simple tax rule where only allcoholic drinks have 20 tax and all other products have 10 tax Update the Domain Model if necessary Update all Sequence Diagram(s) that are affected by this rule and discuss your design in terms of Grasp Patterns Implement your design 2 Think of a situation in which the clerk wants to export the list of books in the library into XLSX format (The information about the books is exported in an Excel document) Suggest and explain a solution (exporting details do not have to be explained) Explain your solution considering Changes to business processes are inevitable Figure 18 3 Sequence diagrams and system operation handling View full size image 1 Register makeNew Sale 1 create Sale Window objects or GUI widget objects or Web control objects Register Product Catalog enteritem( ) desc getProductDesc( itemID) I UI LAYER 1 DOMAIN LAYER Figure 18 3 Sequence diagrams and system operation handling View full size image 1 Register makeNew Sale 1 create Sale Window objects or GUI widget objects or Web control objects Register Product Catalog enteritem( ) desc getProductDesc( itemID) I UI LAYER 1 DOMAIN LAYER

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Question: 1. Define a simple tax rule where only allcoholic drinks have % 20 tax and all other products have %10 tax. Update the Domain Model

1. Define a simple tax rule where only allcoholic drinks have

1. Define a simple tax rule where only allcoholic drinks have % 20 tax and all other products have %10 tax.

Update the Domain Model if necessary
Update all Sequence Diagram(s) that are affected by this rule and discuss your design in

terms of Grasp Patterns
Implement your design

2. Think of a situation in which the clerk wants to export the list of books in the library into XLSX format (The information about the books is exported in an Excel document).

Suggest and explain a solution (exporting details do not have to be explained)
Explain your solution considering Changes to business processes are inevitable.

Figure 18.3. Sequence diagrams and system operation handling. [View full size image] 1 : Register | makeNew Sale 1 create : Sale Window objects or GUI widget objects or Web control objects Register Product Catalog enteritem(...) desc = getProductDesc( itemID) I UI LAYER 1 DOMAIN LAYER Figure 18.3. Sequence diagrams and system operation handling. [View full size image] 1 : Register | makeNew Sale 1 create : Sale Window objects or GUI widget objects or Web control objects Register Product Catalog enteritem(...) desc = getProductDesc( itemID) I UI LAYER 1 DOMAIN LAYER

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