Consider the case of calculating the price of all the products in an customer order. A sequence diagram can provide the information starting from the method “calculating_ the_price”. Hint: - define the objects that are needed so that starting from an order (initial object) to find out the prices of the items and then the total. - starting from an instance of the order define the messages that are passed between the objects in that use case. Example: from the order the messages: get_quantity , get_item are sent to the next object (order_line). - after that there are other sequence messages for the prices (get_prices). - after having done that for all the items the order needs to compute an overall discount (compute_discount). - the method: get_discount_info is invoked and the discount is sent to the customer.
Consider the case of calculating the price of all the products in an customer order. A sequence diagram can provide the information starting from the method “calculating_ the_price”. Hint: - define the objects that are needed so that starting from an order (initial object) to find out the prices of the items and then the total. - starting from an instance of the order define the messages that are passed between the objects in that use case. Example: from the order the messages: get_quantity , get_item are sent to the next object (order_line). - after that there are other sequence messages for the prices (get_prices). - after having done that for all the items the order needs to compute an overall discount (compute_discount). - the method: get_discount_info is invoked and the discount is sent to the customer.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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- Consider the case of calculating the price of all the products in an customer order. A sequence diagram can provide the information starting from the method “calculating_ the_price”. Hint:
- define the objects that are needed so that starting from an order (initial object) to find out the prices of the items and then the total.
- starting from an instance of the order define the messages that are passed between the objects in that use case. Example: from the order the messages: get_quantity , get_item are sent to the next object (order_line).
- after that there are other sequence messages for the prices (get_prices).
- after having done that for all the items the order needs to compute an overall discount (compute_discount).
- the method: get_discount_info is invoked and the discount is sent to the customer.
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