How does a query tree represent a relational algebra
How does a query tree represent a relational algebra expression? Discuss any three rules for query optimisation, giving example as to when should each rule be applied.
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list two restrictions that are applied on the modification updation insertion or deletion of base tables through view
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how does a query tree represent a relational algebra expression discuss any three rules for query optimisation giving
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let vertex sets v1 and v2 be defined by v1 1 2 3 and v2 a b c let e1 1 2 2 3 and let e2 a b b c be the edge
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