IT403- Fundamentals of Databases Assignment
Question One
1. Give an example of 3 relations illustrating primary keys and foreign keys.
Question Two
Consider the following relations:
Student(sID, surName, firstName, campus, email)
Course(dept, cNum, name)
Offering(oID, dept, cNum, term, instructor)?
Took(sID, oID, grade)
Such as:
Offering[dept, cNum] ⊆ Course[dept, cNum]
Took[sID] ⊆ Student[sID]?
Took[oID] ⊆ Offering[oID]
Answer the following query using relational algebra:
1. Give the Student number of all students who have taken the course number "343" by the department "CS".
2. Find sID of all students who have earned some grade over 80 and some grade below 50.
3. Find the Terms when the course number "369" by the department "CS" was not offered.
4. Find the Department and course number of courses that have never been offered.
Format your assignment according to the following formatting requirements:
1. The answer should be typed, double spaced, using Times New Roman font (size 12), with one-inch margins on all sides.
2. The response also includes a cover page containing the title of the assignment, the student's name, the course title, and the date. The cover page is not included in the required page length.
3. Also include a reference page. The Citations and references should follow APA format. The reference page is not included in the required page length.