Q3Consider the following schema of a car renting agency(7.5+7.5= 15)Vehicle(Vno, Vmake, Vtype, Vprice)Driver(Dno. License Year, Experience, State)Drives(Dno, Vno, Date, Start time, End Time)There are two proposals to define primary keys for Vehicle (a) Vno, Vmake and (b) Vno. Which onewould you choose and why?a.Write SQL queries to do the followingi. Find all vehicles whose price is greater than 2 lakhs and order these bytheir make in ascending orderii. Find the experience of those drivers who drove vehicle number DL 2C4745.b. For each of the queries abovei. Build the query tree and clearly identify the heuristics usedii. What is the order of execution of operations of eachquery

Both can be choosen as primary keys because vehicle number should be unique for one particular…

onsider the following schema of a car renting agency Vehicle(Vno, Vmake, Vtype, Vprice) Driver(Dno. License Year, Experience, State) Drives(Dno, Vno, Date, Start time, End Time) There are two proposals to define primary keys for Vehicle (a) Vno, Vmake and (b) Vno. Which one would you choose and why? Write SQL queries to do the following a. i. Find all vehicles whose price is greater than 2 lakhs and order these by their make in ascending order ii. Find the experience of those drivers who drove vehicle number DL 2C 4745.

onsider the following schema of a car renting agency Vehicle(Vno, Vmake, Vtype, Vprice) Driver(Dno. License Year, Experience, State) Drives(Dno, Vno, Date, Start time, End Time) There are two proposals to define primary keys for Vehicle (a) Vno, Vmake and (b) Vno. Which one would you choose and why? Write SQL queries to do the following a. i. Find all vehicles whose price is greater than 2 lakhs and order these by their make in ascending order ii. Find the experience of those drivers who drove vehicle number DL 2C 4745.

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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