Question: Using all Steps in Query Processing : apply the Heuristic Optimization algorithm , consider the following relation schemas N1({A

Using all Steps in Query Processing : apply the Heuristic Optimization algorithm , consider the following relation schemas

N1({A

N2({A,E,Q} , {AE}) ,

N3({E,F,G},{E,F})

And the SQL query :

(? , ? , ? )

Draw the Initial Query Tree

Analyse the initial Query and perform the Query Tree after Moving down Selects

Re-draw the Tree after Joins

Re-draw the Tree after switching positions

Re-draw the Tree after introducing Project operations

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