Consider an online mobile phone application in which customers can purchase smartphones, including iPhone and Samsung models. The software designer considers applying the Gang of Four (GoF) Factory Method pattern to enhance their design. Currently, there are classes including: SalesInterface, Sales Process (to process the sales), Customer, Phone, iPhone, Samsung and Payment, in their design model. Which of the following is a good design? Select one: a. A Factory class should be created to hide the Phone and Customer classes. b. A Factory class should be created to hide the SalesInterface and Customer classes. C. A Factory class should be created to hide the SalesInterface and Sales Process classes. d. A Factory class should be created to hide the Phone, iPhone and Samsung classes.

Consider an online mobile phone application in which customers can purchase smartphones, including iPhone and Samsung models. The software designer considers applying the Gang of Four (GoF) Factory Method pattern to enhance their design. Currently, there are classes including: SalesInterface, Sales Process (to process the sales), Customer, Phone, iPhone, Samsung and Payment, in their design model. Which of the following is a good design? Select one: a. A Factory class should be created to hide the Phone and Customer classes. b. A Factory class should be created to hide the SalesInterface and Customer classes. C. A Factory class should be created to hide the SalesInterface and Sales Process classes. d. A Factory class should be created to hide the Phone, iPhone and Samsung classes.

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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Question

Consider an online mobile phone application in which customers can purchase smartphones, including iPhone and Samsung models. The software designer
considers applying the Gang of Four (GoF) Factory Method pattern to enhance their design. Currently, there are classes including: Sales Interface, Sales Process
(to process the sales), Customer, Phone, iPhone, Samsung and Payment, in their design model. Which of the following is a good design?
Select one:
a. A Factory class should be created to hide the Phone and Customer classes.
b. A Factory class should be created to hide the SalesInterface and Customer classes.
C. A Factory class should be created to hide the SalesInterface and Sales Process classes.
d. A Factory class should be created to hide the Phone, iPhone and Samsung classes.

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