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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
Give adetailed explanation of the following UML Class diagram that shows the Abstract Factory Design Pattern of a Java program.
Expert Solution
Step 1: Unified Modeling Language(UML) class diagram
- UML class diagram is a static diagram that explains the system structure by representing the classes of the system, and their operations and attributes and the relationship between the objects.
- A class in the class diagram is represented using a box with “3” compartments.
- Top compartment has the class name.
- Middle compartment has the attributes of the class.
- Bottom compartment has the methods or operations of the class.
- Notations that are used to denote the visibility of the class members is as follows,
- “+”: To denote the public member, “+” should be located in front of the member name.
- “-”: To denote the private member, “-” should be located in front of the member name.
- “#”: To denote the protected member, “#” should be located in front of the member name.
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