Maurice Tutor

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Teaching Since: May 2017
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 24 Sep 2017 My Price 4.00

schedules of courses

1.Consider a relation R(A, B, C, D, E) with the following dependencies:

AB âC, CD âE, DE âB

Is AB a candidate key of this relation? If not, is ABD? Explain your answer.

2.Consider the relation R, which has attributes that hold schedules of courses and sections at a university; R = {CourseNo, SecNo, OfferingDept, Credit Hours, CourseLevel, InstructorSSN, Semester, Year, Days_Hours, RoomNo, NoOfStudents}. Suppose that the following functional dependencies hold on R:

{CourseNo} â {OfferingDept, Credit Hours, CourseLevel}

{CourseNo, SecNo, Semester, Year} â

{Days_Hours, RoomNo, NoOfStudents, InstructorSSN}

{RoomNo, Days_Hours, Semester, Year} â

{InstructorSSN, CourseNo, SecNo}

Try to determine which sets of attributes form keys of R. How would you normalize this relation?

Answers

Maurice Tutor
(5)
Status NEW Posted 24 Sep 2017 11:09 AM My Price 4.00

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