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Draw ER diagram and identify and underline the primary key for the following exercise A university...

Draw ER diagram and identify and underline the primary key for the following exercise

A university has a large number of courses in its catalog. Attributes of courses include CRS_NO, CRS_NAME, and UNITS. Each course has other courses as prerequisites.

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Answer #1

In the ER diagram ,

  • CRS_NO is the primary key for Course entity.
  • University may have more than one Courses, so the relationship is one to many from University to Course
  • One University may have more tha one student enrolled, so the relationship is one to many from University to Student
  • One Student can opt more than one course, so the relationship is one to many from Student to Course

Below is the ER diagram:

U ID Name CRS NQ CRS_NAME Students Address U-ID Course has many CourseList UNITS has many ssociated w Students rerequisiteCou

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