Common Mistakes while drawing Use Case Diagrams
Mistake 1
Arrow of include must be on opposite side of base use case. For example, here withdraw money is base use case.

Mistake 2
It is necessary to name each boundary. Here we have named it as Bank management system.

Mistake 3
Arrow of extend must be on side of base use case. For example, here withdraw money is base use case.

Mistake 4
Don’t link child use case directly with user symbol. You can link the child use case with parent.

Mistake 5

Mistake 6

Mistake 7

Mistake 8

Mistake 9

Mistake 10
How many use case diagrams are possible for a single project?

Mistake 11

Mistake 12

Correct Diagram

Read more about Use case diagram
- Use case diagram tutorial
- Common Mistakes of Use Case Diagrams
- Representing Use Case Diagram with SUC Table
- UML MCQs