what are Joins? How many types are there?
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Answer Posted / arun prasad
IF WE WANT TO GET THE DATA FROM SOME TABLES WHICH HAS SOME
RELATIONS BETWEEN THOSE THEN WE USE JOINS TO GET THE DATA
BY USING THOSE PRIMARY KEYS.
THERE ARE 2 TYPES OF JOINS, INNER AND OUTER JOINS.
INNER IS USED TO GET THE DATA WHERE THE TABLES ARE IN SAME
DATABASE AND OUTER JOIN IF THEY ARE IN OTHER.
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