Question: Since Natural - join operations are associative, ( E 1 natural join symbol.png E 2 ) natural join symbol.png E 3 = E 1 natural

Since Natural-join operations are associative, (E1natural join symbol.png E2)natural join symbol.png E3= E1 natural join symbol.png(E2natural join symbol.png E3), the ordering of natural-join is not important for query optimization.

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