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I need the help with following question as part of my assignment / homework

Provided the following structure

CLASS(Reg-NO ,Unit-ID,UnitTitle,Lecturer,Office)

The following functional dependencies are given.

  • Unit_ID → UnitTitle
  • Lecturer → Office
  • UnitTitle → Lecturer

Question 1 : Identify the form in which it exists.

Question 2 : Decompose to 3NF if it is not in that form.

For question 1: I Identified it to be in the 1NF since it does not have unique PK as per the 2NF requirements. It also meets the 1NF requirements, as per my observations.

For question 2: I decomposed it to the following

  • CLASS(Class-ID,Reg-NO)

  • UNIT(Unit-ID,UnitTitle)

  • LECTURER(Lecturer-ID,Lecturer,Office)

I have doubts about my answers and would like some help in reviewing them.

Also what format is structure in? (the : ENTITY(column1,column2,...) format) What's it called?

  • 1
    2NF does not require a single candidate key. – ypercubeᵀᴹ Jul 2 '18 at 16:39
  • we were given the following Notes for reference. I think my interpretation might be wrong. Could you explain more on that. @ypercubeᵀᴹ – Bob Kimani Jul 2 '18 at 16:55

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