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Given this query against the University schema: “What is the average grade received by all students...

Given this query against the University schema: “What is the average grade received by all students taking a specific course_number during a specific semester and year?” What are the entities and attributes, and in what order are they accessed to derive a result for this query? Note: Use Slides 8 & 10 as a template for your answer. Note: Assume that letter grades can be translated into numeric values i.e. A=4, B=3, etc.

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Answer #1

For the solution purpose i have assumed the names of the tables as SECTION and GRADE_REPORT.

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