Design and realisation of a knowledge base

Fig4. Administrator Use case diagram

Fig5. Visitor use case diagram

Fig6. Teacher use case diagram

Fig7. Student use case diagram: Student

2.4.4. Use case diagram: Detailed textual description

2.4.4.1 Conduct of use case: Activity diagram

To describe the operational step-by-step workflows; we shall represent activity diagrams to show workflows of stepwise activities and actions, they support choice, iteration and concurrency.

Here we will describe the conduct of some use cases.