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Rob creates a Course_Details table that has four columns: Course _ID, Course_Name, Semester, and Credits. A course may have 0.5 credits if it is for one semester and 1.0 credit if it is for two semesters. Which field should Rob assign as a primary key in the table?

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Rob creates a Course_Details table that has four columns: Course _ID, Course_Name, Semester, and Cre...
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