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Question

The following query can be replaced by which one of the following? 
SELECT name, course_id
FROM instructor, teaches
WHERE instructor_ID= teaches_ID;

a.

SELECT name,course_id
FROM teaches,instructor
WHERE instructor_id=course_id;

b.

SELECT name, course_id
FROM instructor NATURAL JOIN teaches;

c.

SELECT name ,course_id
FROM instructor;

d.

SELECT course_id
FROM instructor JOIN teaches;

Posted under Data Modification and Constraints SQL Server

Answer: (b).SELECT name, course_id
FROM instructor NATURAL JOIN teaches;

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Q. The following query can be replaced by which one of the following?
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