Describe the differences inmeaning between the terms relation and relation schema. Illustrate your answer by referring to
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Describe the differences inmeaning between the terms relation and relation schema. Illustrate your answer by referring to your solution to Exercise below.
Student (student-id, name, program)
Course (courseno, title, syllabus, credits)
Course-offering (courseno, secno, year, semester, time, room)
Instructor (instructor-id, name, dept, title)
Enrols (student-id, courseno, secno, semester, year, grade)
Teaches (courseno, secno, semester, year, instructor-id)
Requires (maincourse, prerequisite)
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