Introduction to the Interaction Diagrams

Introduction to the Interaction Diagrams-OOAD Lecture Notes pdf

BASIC BEHAVIORAL MODELING-I

Introduction

Interactions

In object-oriented systems, things get done by objects interacting with one another, by passing messages
Interaction is a kind of action that occurs as two or more objects mutually carry out an action that has an effect upon one another
A message is a specification of a communication between objects to request activity
The requested objects provide some service to the requesting object
Each interaction can be modeled in two ways

By emphasizing its time ordering of messages

By emphasizing the structural organization of participating objects

Interaction Diagrams

They are used to describe interactions among the different elements in the model
There are two types of interaction diagrams - sequence diagrams and collaboration diagrams
Sequence diagrams emphasize on time sequence of messages whereas collaboration diagrams emphasize on the structural organization of the participating objects

In general, interaction diagrams:

Sequence Diagram with Example

Collaboration Diagram with Example

CSE Study Material