der the fonowing felation. Computer_Repair(Comp_ID, Engineer_ID, Customer_name, Engineer_Name, Date_Assigned, 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 FD2: Comp_ID → Customer_name, Issue, Priority_Level, Service_Charge FD3: Priority_Level → Service_Charge FD4: Total_Repairs Commission_Percentage i. Give reasons to explain if this is in 1NF or not. If not, decompose it to 1NF. ii. Give reasons to explain if this is in 2NF or not. If not, decompose it to 2NF. iii. Give reasons to explain if this is in 3NF or not. If not, decompose it to 3NF.
der the fonowing felation. Computer_Repair(Comp_ID, Engineer_ID, Customer_name, Engineer_Name, Date_Assigned, 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 FD2: Comp_ID → Customer_name, Issue, Priority_Level, Service_Charge FD3: Priority_Level → Service_Charge FD4: Total_Repairs Commission_Percentage i. Give reasons to explain if this is in 1NF or not. If not, decompose it to 1NF. ii. Give reasons to explain if this is in 2NF or not. If not, decompose it to 2NF. iii. Give reasons to explain if this is in 3NF or not. If not, decompose it to 3NF.
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
Problem 1PE
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Transcribed Image Text:Consider the following relation:
Computer_Repair(Comp_ID, Engineer_ID, Customer_name, Engineer_Name, Date_Assigned, 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
FD2: Comp_ID -
FD3: Priority_Level → Service_Charge
FD4: Total_Repairs
- Customer_name, Issue, Priority_Level, Service_Charge
Commission_Percentage
i. Give reasons to explain if this is in 1NF or not. If not, decompose it to 1NF.
ii. Give reasons to explain if this is in 2NF or not. If not, decompose it to 2NF.
iii. Give reasons to explain if this is in 3NF or not. If not, decompose it to 3NF.
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