AdminID CourselD CourseName AdminPassword CourseFees AdminName have Admin Course CourseDuration AdminDetails have has StudentName StudentID StudentCourse Student TeacherName Teacher TeacherSalary StudentFee EducationPersonal TeacherID StudentEducation StudentPersonal TeacherCourse TeacherEducation

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A: No of external entities: 1. Student 2. Database 3. System UI

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A: I have answered below:

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A: The answer is

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A: ER Diagram  It stands for Entity Relationship Diagram, additionally called ERD is a diagram that…

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A: Below is the step by step answer and screenshots:

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A: I have written the query below:

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A: ANSWER:

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A: The DOM stands for Document Object Model.

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A: Required:   We have to develop Sql queries according to the given database schema.

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A: Dear Student, A group of related field , is known as tuple. it is just a nomenclature so all the…

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A: Here I draw ERD using ERD PLUS online. I hope you like it.

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A: Answer to the above question is in step2.

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System Model Approaches

The systems model approach is a process-oriented representation that emphasizes the impact or flow of information between modules. The multidisciplinary study of the use of models to design and create systems in business and IT development is known as systems model approach. It models how processes interact and what these processes do, but it does not go into detail about how these processes are implemented. Functional decomposition may be utilized to enhance the models employed in this technique, and they can be coupled to requirements models for additional system partitioning.