Which of the following is true?I. Implementation of self-join is pos – McqOptions

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1.	Which of the following is true?I. Implementation of self-join is possible in SQL with table alias.II. Outer-join operation is basic operation in relational algebra.III. Natural join and outer join operations are equivalent.
A.	I and II are correct
B.	II and III are correct
C.	Only III is correct
D.	Only I is correct
Answer» E.

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