Question: The Relational Model and Logical Design (a) In the context of the relational data model, describe the following terms: (i) relation (ii) primary key (iii)

The Relational Model and Logical Design


(a) In the context of the relational data model, describe the following terms:

(i) relation 

(ii) primary key 

(iii) foreign key 

(iv) null                                                                                                                  (12 marks)


Question 2


Normalisation

(a) Explain the following data dependency terms and give examples from the student relation below:


(i) Functional dependency 

(ii) Full functional dependency 

(iii) Partial functional dependency 

(iv) Transitive dependency 

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