Question 2 Consider the following relation: Computer Repair(Comp ID, Engineer ID, Date Assigned, Customer_name, Customer_phone Engineer_Name, Engineer_phone, Date_Repaired, Issue, Priority_Level, Service_Charge Commission_Percentage, Total_Repairs) The primary key of the relation is underlined The relation has the following additional functional dependencies: FD1: Engineer_ID →→ Engineer_Name, Total_Repairs, Commission_Percentage, Engineer_phone

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
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Question 2
Consider the following relation:
Computer Repair(Comp ID, Engineer ID, Date Assigned, Customer_name, Customer_phone,
Engineer_Name, Engineer_phone, Date_Repaired, Issue, Priority_Level, Service_Charge,
Commission_Percentage, Total_Repairs)
The primary key of the relation is underlined
The relation has the following additional functional dependencies:
FD1: Engineer_ID →→ Engineer_Name, Total_Repairs, Commission_Percentage,
Engineer_phone
FD2: Comp_ID, Date_Assigned → Issue, Priority_Level, Service_Charge
FD3: Comp_ID Customer_name, Customer_phone
FD4: Priority Level Service Charge
FD5: Total Repairs
Commission_Percentage
i. Explain if this is in 1NF or not. If not, apply normalization to decompose it to 1NF.
ii. Explain if this is in 2NF or not. If not, apply normalization to decompose it to 2NF.
iii. Explain if this is in 3NF or not. If not, apply normalization to decompose it to 3NF
Transcribed Image Text:Question 2 Consider the following relation: Computer Repair(Comp ID, Engineer ID, Date Assigned, Customer_name, Customer_phone, Engineer_Name, Engineer_phone, Date_Repaired, Issue, Priority_Level, Service_Charge, Commission_Percentage, Total_Repairs) The primary key of the relation is underlined The relation has the following additional functional dependencies: FD1: Engineer_ID →→ Engineer_Name, Total_Repairs, Commission_Percentage, Engineer_phone FD2: Comp_ID, Date_Assigned → Issue, Priority_Level, Service_Charge FD3: Comp_ID Customer_name, Customer_phone FD4: Priority Level Service Charge FD5: Total Repairs Commission_Percentage i. Explain if this is in 1NF or not. If not, apply normalization to decompose it to 1NF. ii. Explain if this is in 2NF or not. If not, apply normalization to decompose it to 2NF. iii. Explain if this is in 3NF or not. If not, apply normalization to decompose it to 3NF
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