Consider the following relational query on the above database : SELECT S.sname FROM Suppliers S WHERE S.sid NOT IN (SELECT C. sid FROM Catalog C WHERE C.pid NOT IN (SELECT P.pid FROM Parts P WHERE P.color blue )) Assume that relations corresponding to the above schema are not empty. Which one of the following is the correct interpretation of the above query?

Find the names of all suppliers who have not supplied a non-blue part

Find the names of all suppliers who have supplied a non-blue part

Find the names of all suppliers who have not supplied a non-blue part

Find the names of all suppliers who have supplied only blue parts

Find the names of all suppliers who have not supplied only blue parts

Consider the following relational query on the above database : SELECT

1.	Consider the following relational query on the above database : SELECT S.sname FROM Suppliers S WHERE S.sid NOT IN (SELECT C. sid FROM Catalog C WHERE C.pid NOT IN (SELECT P.pid FROM Parts P WHERE P.color < > blue )) Assume that relations corresponding to the above schema are not empty. Which one of the following is the correct interpretation of the above query?
A.	Find the names of all suppliers who have supplied a non-blue part
B.	Find the names of all suppliers who have not supplied a non-blue part
C.	Find the names of all suppliers who have supplied only blue parts
D.	Find the names of all suppliers who have not supplied only blue parts
Answer» B. Find the names of all suppliers who have not supplied a non-blue part

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