Uml Activity Diagrams
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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.
Uml Activity Diagrams
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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 www.qbi.in
- 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 www.qbi.in
- 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 www.qbi.in
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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 www.qbi.in
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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 www.qbi.in
- 16. Prepare Activity Diagram for Case Study for Elective Subject Proposal and Enrollment System available on E-Learning Portal www.qbi.in
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- 18. Thank You www.qbi.in