QUESTION 7: Design Patterns The Utopian Services Computing (USC) department houses a legacy system on its servers with different subsystems that perform certain tasks. Each subsystem requires specific para- meters for it to perform its respective task. Moreover, client programs must know about the complexities of each subsystem, which makes using the subsystems more effort than it needs to be. The USC wants to create a unified API that allows client programs to request for the services offered by each of the subsystems in a uniform and simple way. The following are the design patterns the USC is considering. • Façade Design Pattern • Proxy Design Pattern • Command Design Pattern (a) Which design pattern do you think would best fit this requirement? (b) Provide reasons for your choice of design pattern.

QUESTION 7: Design Patterns The Utopian Services Computing (USC) department houses a legacy system on its servers with different subsystems that perform certain tasks. Each subsystem requires specific para- meters for it to perform its respective task. Moreover, client programs must know about the complexities of each subsystem, which makes using the subsystems more effort than it needs to be. The USC wants to create a unified API that allows client programs to request for the services offered by each of the subsystems in a uniform and simple way. The following are the design patterns the USC is considering. • Façade Design Pattern • Proxy Design Pattern • Command Design Pattern (a) Which design pattern do you think would best fit this requirement? (b) Provide reasons for your choice of design pattern.

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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