Page 44 - DCAP308_OBJECT_ORIENTED_ANALYSIS_AND_DESIGN

Object Oriented Analysis and Design Anil Sharma, Lovely Professional University

Notes Unit 4: Advanced Class Modelling – I

CONTENTS
Objectives

Introduction
4.1 Advanced Object and Class Concepts
4.1.1 Instantiation

4.1.2 Class Attributes and Operations
4.1.3 Attribute Multiplicity
4.1.4 Candidate Keys for Classes
4.1.5 Domains

4.2 Association Ends
4.2.1 Rolename

4.2.2 Navigation
4.2.3 Qualifiers
4.3 N-ary Association
4.4 Aggregation

4.5 Summary
4.6 Keywords
4.7 Review Questions

4.8 Further Readings

Objectives

After studying this unit, you will be able to:
Describe advanced object and class concepts

Explain the concept of association ends
Discuss the concept of N-ary associations
Analyse the concept of aggregation

Discuss the different types of aggregation
Introduction

Advanced class modeling refers to the advanced properties of objects in general in a specific
computer programming language, technology, notation or methodology that uses them. This
unit explains the advanced aspects of object modeling that you will need to model complex and
large applications. It builds on the basic concepts of the previous unit, so you should study the
previous unit properly before going through this unit. This unit will explain the concepts of

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