Questions 15: What is the fundamental diagramming error in the Use Case Diagram

Question

Questions 15:

What is the fundamental diagramming error in the Use Case Diagram as it is modeled for grading changes?

Hint:         Look very carefully at your project work and the textbook’s material for subtle, but very important, differences

Parent Student Teacher Register and Grade Summer School Students Student Registrations Register Students Register Elementary Register Secondary Students Students Registration Staff Answer inquiries Student Report Results Grades Report Grades Report School Grades Grade Students Conduct Tests Grade Elementary Grade Secondary Students

Explanation / Answer

The basic fundamental problem with the diagram is that the relationship between different attributes is not defined. Usually we defined the extend and the include relationships in the use case diagrams which is missing for lot of entities in the diagram.

Also for each entitiy we need to define the multiplicity in the relationship which is also missing in the abve diagram.

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