Page 40 - Discrete Structure II

Answer:

R= {(a1, b2), (a2, b1), (a2, b3), (a2, b4), (a3, b1), (a3, b3), (a3, b5)}

Microsoft Access:

SELECT Supplier
FROM Part_needs
WHERE 600<= Part_number

SELECT Part_needs.Supplier, Part_needs.Part_number

FROM Part_needs

WHERE (((Part_needs.Part_number)>1500));