The document discusses activity diagrams and their components. It describes the initial and final nodes that mark the beginning and end of an activity. It also discusses flow final nodes, activities, activity partitions, decision nodes, merge nodes, fork nodes, and join nodes. Examples of activity diagrams for ATM machine operation and a patient visiting a diabetes hospital are provided. The document concludes by proposing an activity diagram for an elective subject enrollment system.

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7. Initial Node
An Activity Diagram Starts with an Initial Node. Only
one Initial Node is permissible in Activity Diagram
(Bulls Eye Shape)
Final Node
An Activity Diagram Ends with a Final Node. Several
Final Nodes are Permissible (Bulls Eye Surrounded
by a co-centric circle )
Flow Final Node
As Activities have several parallel flows one flow
may end while others continue.
(Circle with an X inside ) www.qbi.in

8. Activities
Activity Notation for an Activity is a rounded
rectangle.
Activity Partitions
Activity Partitions divide an Activity
Diagram in columns which display
Where and By Whom the Activities are
being carried out
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9. Decision Node
A Decision Node is used for
Alternate flows
Merge Node
Alternate Flows Merge
through a Merge Node
Both Decision and Merge
Nodes have the notation of
that of a Diamond
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10. Fork Node
Fork Node is utilized in Activity Diagrams
for depicting parallel flow
Join Node
Merge Node is utilized in Activity Diagrams
for depicting convergence parallel flows
Fork & Join Node Together
Fork Node is utilized in Activity Diagrams
for depicting parallel flow
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11. Microsoft Visio
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13. ATM Machine Operation
Step I
You Insert the Card
Step II: You Provide the Pin / Password
Step III: If password is valid then you have to choose the
transaction
If password is invalid then you have to provide the
password again
If you provide wrong password more than three times card is blocked
Step IV : You carry out the transaction in case password is valid
Step V: You are asked for more transactions
Step VI: Remove the Card
Process is over
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15. Patient Visits a Diabetes Hospital
Step I
Doctor Sees the Patient and studies Patient History
Step II: Doctor Prescribes Lab-Test
Step III: Patient shows symptoms or no symptoms for disease
Step IV: For No Symptoms Process Ends
Step V: For Symptoms : Check BP, Classify Diabetic Type, Classify
Patient Work type
Step VI: Prescribe Treatment
Step 7 : Process Ends
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16. Prepare Activity Diagram for Case Study for Elective Subject
Proposal and Enrollment System available on E-Learning
Portal
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18. Thank You
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