Consider the relation R, which has attributes that hold schedules of courses and sections at a university; R = {{Course_no, Sec_no, Offering_dept, Credit_hours, Course_level, Instructor_ssn, Semester, Year, Days_hours, Room_no, No_of_student}. Suppose that the following functional dependencies hold on R: {Course_no} -> {Offering_dept, Credit_hours, Course_level} {Course_no, Sec_no, Semester, Year} -> {Days_hours, Room_no, No_of_students, Instructor_ssn} {Room_no, Days_hours, Semester, Year} -> {Instructor_ssn, Course_no, Sec_no} Answer the following: What set of attributes form the key of R? Normalize this relation to 3NF.
Consider the relation R, which has attributes that hold schedules of courses and sections at a university; R = {{Course_no, Sec_no, Offering_dept, Credit_hours, Course_level, Instructor_ssn, Semester, Year, Days_hours, Room_no, No_of_student}. Suppose that the following functional dependencies hold on R: {Course_no} -> {Offering_dept, Credit_hours, Course_level} {Course_no, Sec_no, Semester, Year} -> {Days_hours, Room_no, No_of_students, Instructor_ssn} {Room_no, Days_hours, Semester, Year} -> {Instructor_ssn, Course_no, Sec_no} Answer the following: What set of attributes form the key of R? Normalize this relation to 3NF.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Consider the relation R, which has attributes that hold schedules of courses and sections at a university; R = {{Course_no, Sec_no, Offering_dept, Credit_hours, Course_level, Instructor_ssn, Semester, Year, Days_hours, Room_no, No_of_student}. Suppose that the following functional dependencies hold on R:
{Course_no} -> {Offering_dept, Credit_hours, Course_level}
{Course_no, Sec_no, Semester, Year} -> {Days_hours, Room_no, No_of_students, Instructor_ssn} {Room_no, Days_hours, Semester, Year} -> {Instructor_ssn, Course_no, Sec_no}
Answer the following: What set of attributes form the key of R? Normalize this relation to 3NF.
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