Consider a relation X with six attributes WYSMFE where WS is a composite primary key for X. Assume X has the following functional dependencies (X is one table with the attributes W, Y, S, М, F, E): 1.1) WS → YMFE S> ΥΜΕ E > M a) In what normal form is relation X? Explain why? WS is a primary key, b) Is it possible to decompose X into a number of relations in order to achieve a higher normal form? Explain how (this means using English sentences and a diagram showing the final relation(s)).

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# ICS 311 - Database Management Systems

## Assignment 5

### Question 1: Normalization

Consider a relation X with six attributes WYSFME where WS is a composite primary key for X. Assume X has the following functional dependencies (X is one table with the attributes W, Y, S, M, F, E):

1.1)  
- WS ➔ YMFE  
- S ➔ YME  
- E ➔ M  

a) In what normal form is relation X? Explain why?  
*WS is a primary key.*

b) Is it possible to decompose X into a number of relations in order to achieve a higher normal form? Explain how (this means using English sentences and a diagram showing the final relation(s)).
Transcribed Image Text:# ICS 311 - Database Management Systems ## Assignment 5 ### Question 1: Normalization Consider a relation X with six attributes WYSFME where WS is a composite primary key for X. Assume X has the following functional dependencies (X is one table with the attributes W, Y, S, M, F, E): 1.1) - WS ➔ YMFE - S ➔ YME - E ➔ M a) In what normal form is relation X? Explain why? *WS is a primary key.* b) Is it possible to decompose X into a number of relations in order to achieve a higher normal form? Explain how (this means using English sentences and a diagram showing the final relation(s)).
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