Using the ERD diagram above, identify one instance where a data redundancy issue could be found

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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Using the ERD diagram above, identify one instance where a data redundancy issue could be found

Item
Production_Units Sa
integer(10)
N
integer( 10) N
No_of_Items_Needed integer(10) N
Item_Number
item_Number
integer(10)
Create_Date_d
date
Serial
integer(10)
I exact_Weight_un integer(10)
ProductType_p
ProductDesc_d
Quality_Test
Cost_of_Materials
varchar(255) N
varchar(255) N
double(10)
Raw Materials
item_Number
integer(10)
Material_ID
integer(10)
O Type
D UnitCost_per_item numeric(19, 0)
varchar(255)
zzzz
Transcribed Image Text:Item Production_Units Sa integer(10) N integer( 10) N No_of_Items_Needed integer(10) N Item_Number item_Number integer(10) Create_Date_d date Serial integer(10) I exact_Weight_un integer(10) ProductType_p ProductDesc_d Quality_Test Cost_of_Materials varchar(255) N varchar(255) N double(10) Raw Materials item_Number integer(10) Material_ID integer(10) O Type D UnitCost_per_item numeric(19, 0) varchar(255) zzzz
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