In the ER diagram for a Point of Sale system, there are entities such as Cashier, Product,Checkout, Transaction, CheckoutStand, Return, Inventory, etc. Here inventory records each storagelocation and its capacity. Sometimes, a customer may need to come back to pickup their items afterchecking out while most of the time they leave the store with their purchases. Which of the following is thebetter design for manage transactions?A) Add an attriute to transaction to indicate whether goods have been pickuped or notB) Create two subtyeps of TransactionC) Create a weak entity Pickup to link with TransactionD) Add a relationship between Transaction and Product
In the ER diagram for a Point of Sale system, there are entities such as Cashier, Product,Checkout, Transaction, CheckoutStand, Return, Inventory, etc. Here inventory records each storagelocation and its capacity. Sometimes, a customer may need to come back to pickup their items afterchecking out while most of the time they leave the store with their purchases. Which of the following is thebetter design for manage transactions?A) Add an attriute to transaction to indicate whether goods have been pickuped or notB) Create two subtyeps of TransactionC) Create a weak entity Pickup to link with TransactionD) Add a relationship between Transaction and Product
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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Question
In the ER diagram for a Point of Sale system, there are entities such as Cashier, Product,
Checkout, Transaction, CheckoutStand, Return, Inventory, etc. Here inventory records each storage
location and its capacity. Sometimes, a customer may need to come back to pickup their items after
checking out while most of the time they leave the store with their purchases. Which of the following is the
better design for manage transactions?
A) Add an attriute to transaction to indicate whether goods have been pickuped or not
B) Create two subtyeps of Transaction
C) Create a weak entity Pickup to link with Transaction
D) Add a relationship between Transaction and Product
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