Behavioral Modeling

UNIT-5 Behavioral Modeling (UML)

Behavioral modeling is a way of representing how a system behaves and interacts over time. It focuses on what the system does, how objects communicate, and how actions are triggered by events.

It is mainly used during system analysis and design to understand system functionality clearly.

Behavioral modeling helps to:

· Understand system functionality

· Visualize interaction between components

· Capture dynamic behavior of a system

· Improve communication between developers and clients

Example (Student Login System)

Diagram	Representation
Use Case	Login, Register, Logout
Sequence	Student →Login Form → Server → Database
Activity	Enter ID →Enter Password → Validate → Access
State	Logged out →Logging in → Logged in

Interaction describes how different objects or components of a system communicate with each other to complete a task. It focuses on message passing and collaboration between objects.

A stereotype is used to extend UML elements with extra meaning. It is written inside. A stereotype is a label that gives special meaning to a UML element.

Interaction Diagram

Activity Diagram

An Activity Diagram is a UML diagram used to show the flow of actions or steps in a process or system.

It represents:

· Start and end of a process

· Sequence of activities

· Decision making

· Parallel activities

Example
Start → Enter details → Verify → Result → End

State Chart Diagram (UML)

A State Chart Diagram (also called a State Machine Diagram) is a behavioral diagram in UML used to show the different states of an object/system and how it changes from one state to another based on events. It is mainly used to model dynamic behavior of a system.

· How an object behaves over time

· What events change its state

· What actions happen in each state

Assignment -3

Q1. Draw a Use Case Diagram for an Online Shopping System with the following features:

User Registration & Login
Browse Products
Add to Cart
Place Order
Make Payment
Admin manages products and orders

Q2. Draw a Use Case Diagram for a Library Management System with:

Student and Librarian as actors
Issue Book
Return Book
Search Book
Pay Fine

Q3. Draw a Use Case Diagram for an ATM System with:

Withdraw Cash
Check Balance
Deposit Money
Change PIN

Q4. Draw a Class Diagram for a Student Management System having:

Student, Course, Teacher classes
Student enrolls in Course
Teacher teaches Course

Q5. Draw a Class Diagram for a Bank System with:

Account, Customer, Transaction
Customer has Account
Account generates Transaction

Q6. Draw a Class Diagram for an E-commerce System with:

User, Product, Order, Payment

Q7. Draw a Sequence Diagram for Login Process in a system.

Q8. Draw a Sequence Diagram for Online Order Placement.

Q9. Draw a Sequence Diagram for ATM Cash Withdrawal.

Q10. Draw an Activity Diagram for Online Exam System.

Q11. Draw an Activity Diagram for Student Admission Process.

Q12. Draw an Activity Diagram for Railway Ticket Booking System.

Q13. Draw a State Chart Diagram for Order Processing System.

Q14. Draw a State Chart Diagram for ATM Card Status.

Q15. Draw a State Chart Diagram for Student Life Cycle in College.

Milan Tomic

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