

MCQOPTIONS
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1. |
Consider the following relational query on the above database:SELECT S.snameFROM Suppliers S WHERE S.sid NOT IN (SELECT C.sidFROM Catalog CWHERE C.pid NOT IN (SELECT P.pidFROM Parts PWHERE P.color < > ‘blue’))Assume that relations corresponding to the above schema are not empty. Which 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» E. | |