Question 3. (10 Points)

Consider the CAR relation schema CAR (License number, Engine_Serial_number, Make, Model, Year) and its state

r(CAR) with a set of 6 tuples r = (t1, t2, t3, t4, ts t6}

CAR

License_number

Texas ABC-739

Florida TVP-347

New York MPO-22

ty California 432-TFY

ts California RSK-629

tTexas RSK-629

Engine_serial_number

A69352

B43696

X83554

C43742

Y82935

U028365

Make

Model Year

Mustang 02

Cutlass

05

01

99

04

04

Ford

Oldsmobile

Oldsmobile Delta

Mercedes

190-D

Camry

XJS

Toyota

Jaguar

a) What is the value of ts [Model] (2 points)

b) What is the value of t6[License_number, Make, Model, Year] (2 points)

c) What is the value of t4. Make (2 points)

d) What is the degree of relation CAR (2 points)

e) How many entities exist in the given relation extension CAR (2 points)