A sequence diagram is a slightly more formal way to describe a scenario: VCR. Document Editor. The document editor use case model highlights the distinction between includes, extends, and specializes (i.e., generalizes). It's useful to distinguish between actor initiated and use case initiated use cases. Save As specializes Save because it's actor-initiated, whereas First Save extends Save because it can only be initiated by the Save use case. You can edit this template and create your own diagram. Creately diagrams can be exported and added to Word, PPT (powerpoint), Excel, Visio or any other document. Use PDF export for high quality prints and SVG export for large sharp images or embed your diagrams anywhere with the Creately viewer.
CASE STUDY: Retail Store Management SystemConstruct a design element for Point of sale terminal management system that can be used for buying and selling of goods in the retail shop.When the customer arrives at the post check point with the items to purchase. The cashier records each item, price and adds the item information to the running sales transaction. The description and price of the current item are displayed.
On completion of the item entry the cashier informs the sales total and tax to the customer. The customer chooses payment type (cash, cheque, credit or debit).After the payment is made the system generates a receipt and automatically updates the inventory. The cashier handovers the receipt to the customer.