The document discusses UML diagrams, specifically use case diagrams. It defines key concepts like actors, use cases, and relationships between use cases and actors. It provides examples of a use case description document outline and an ATM transaction use case diagram showing actors, use cases, and relationships like generalization, include, and extend. The use case diagram models the functionality of withdrawing money, checking a balance, and getting a mini statement from an ATM.

1. MOM document on UML Diagram
What is UML diagram?
UML stands for unified modeling language.
 Modeling language is where pictographic represent is used.
There are Nine UML Diagrams that are used
1. Use case Diagram.
2. Class diagram
3. Component diagram
4. Package diagram
5. Deployment diagram
6. Sequential diagram
7. Activity diagram
8. Collaboration diagram
9. State Chart diagram.
In these BA using Use case and Activity diagrams.
What is Use case diagram?
Use case diagrams are usually referred to as behavior diagrams used to describe a set of actions. It gives some
valuable or observable results to actors of system.
An Actor is a user or class of person that interacts to the system.
A Use case represents the actions that are performed by a one or more actor for a particular goal.
 It is also a high level system diagram.
Relationships:
Association: It defines the relation between primary actor and system and it is denoted by →

2. MOM document on UML Diagram
Generalization: It defines the relation between generalized class and specific class is called generalization and it
is denoted as shown below.
USE CASE DESCRIPTION DOCUMENT
Every use case description document must have the following:
Content of the use case description document as follows:
• Use case name
• Use case description
• Actor present
• Basic flow or (+ve ) work flow
• Alternate flow
• Exceptional flow (Ex: wrong user id and password)
• Precondition (Ex: should be registered)
• Post condition (Ex: Should access the account)
• Business rules (Ex: only 5 transactions)
A use case diagram does not show the detail of the use cases: it only summarizes some of the relationships
between use cases, actors, and systems.
Use cases deal only in the functional requirements for a system.
Other requirements such as business rules, quality of service requirements, and implementation constraints must
be represented separately.

3. MOM document on UML Diagram
Example of Use Case Diagram:
ATM Transaction
Customer
VIP customer
Actor3
Login
Enter Pin no.
Enter amount
Geeralization
Forgot password
«extends»
«include»
Generalizatiopn Generalization
Withdraw
Loan
Transaction
Mini statement Balance Enquiry
Logout
*
*
*
*
*
*
*
*
*
*
User Generalization
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Check amount
 The above diagram is shows use case diagram of ATM Transaction.
Extend:[Optional]
Use an Extend link to show that one use case may add functionality to another use case under certain
circumstances. If we forgot password we have another way to get password through forgot password functionality.
It happen may be.
Forgot Login
Password
<<Extend>>

4. MOM document on UML Diagram
Include:[Additional]
In UML modeling, an include relationship is a relationship in which one use case (the base use case) includes
the functionality of another use case (the inclusion use case).
The include relationship supports the reuse of functionality in a use-case model.
<<Include>>
Enter
amount
Check
amount
 For Transaction we use generalization.
 It shows the relation between tasks and sub tasks. It means in use case diagram for transaction we have
generalization with Withdraw, Mini statement and Balance enquiry.
Transaction
Generalizatiopn «uses» «uses»
Withdraw Mini statement Balance Enquiry