Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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 produce a list of relations indicating the primary key, columns and foreign keys.  

Consider the following attributes for tables in a relational model 
designed to keep track of information for a moving company that 
moves residential customers, usually from one home or apartment 
to another:
customerID, customerName, customerCurrentAddress, 
customerCurrentPhone, customerNewAddress, customerNewPhone, 
pickupLocation, dropOffLocation, dateOfMove, startingTime, 
estimatedWeight, estimatedCost, truck#Assigned, driverName, 
driverLicNo, actualCost, amountOfDamages, truckCapacity, 
costOfTolls, tax, finalAmount, invoiceNumber, amountPaid, 
datePaid, checkNumber, amountDue
Assume:
- Although in most cases the pickupLocation is the customer’s old 
address and the dropOffLocation is the new address, there are 
exceptions, such as when furniture is moved to or from storage.
-An estimate is provided before the move using a pre-printed invoice 
containing a unique invoice number. The actual cost is recorded 
on the same form once the move is complete. The actual cost may 
differ from the estimated cost. The final amount includes the actual 
cost of the move, plus tax and tolls.
- In most cases, the customer pays the final amount immediately, 
but sometimes he or she pays only part of the bill, especially if the 
amount of damages is high. In those cases, there is an amount due, 
which is the difference between the final amount and the amount 
paid

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