COMP 430 - DBMS Integration for Car Rental Operations Assignment

Assignment Task

Fast is a new car rental company that just started and is growing fast in several cities. The general manager decided to use a DBMS to help track the daily operations. Consider the following relation that links between the city where a branch is located, the offered car make and type, the number of cars available, the earliest date a car is available and the daily rental cost for the particular car make and type.

BranchCars

• Write the result of the following expressions then translate them into SQL where specified:
  • πMake (BranchCars)
• σType=’4Dr SUV’ OR DailyRent<50>

• πBranchCity (BranchCars) - πBranchCity (πBranchCity (BranchCars)x πMake (BranchCars)-

πBranchCity,Make (BranchCars))

• Write a relational algebra expression and the corresponding SQL query for

each of the following:

• List the branches where more than 2 cars are available before 12/12/2023
• List the branches that offer more than one Type of car. 
• List the average daily rent for each car Type. 
• List pairs of branches which offer similar car Makes regardless of Type, availability date or number of available cars . (20 points) 
• Find the branch that offers the cheapest vehicle. 

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