Consider an online holiday booking system. The users can register and log in to book a holiday package. The software designer would like to apply the Gang of Four (GoF) Proxy pattern to deal with access to the Booking information. Which of the following should be implemented for the pattern?   Select one: a. The Booking interface should implement Real_Booking objects. b. The Proxy_Booking objects should implement the Booking interface. c. The Booking interface is composed with the Proxy_Booking objects. d. The Proxy_Booking objects

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
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Consider an online holiday booking system. The users can register and log in to book a holiday package. The software designer would like to apply the Gang of Four (GoF) Proxy pattern to deal with access to the Booking information. Which of the following should be implemented for the pattern?


 

Select one:
a.

The Booking interface should implement Real_Booking objects.

b.
The Proxy_Booking objects should implement the Booking interface.
c.

The Booking interface is composed with the Proxy_Booking objects.

d.

The Proxy_Booking objects should implement the Real_Booking objects.

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