Is this Relational Algebra, Expression Operator Tree already optimized? What changes would you make to better optimize
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Question:
Is this Relational Algebra, Expression Operator Tree already optimized?
What changes would you make to better optimize this Query?
Use Transformation Rules for the Relational Algebra Operations.
By applying transformation rules, the optimizer can transform one relational algebra expression into an equivalent expression that is known to be more efficient.
Related Book For
Database management systems
ISBN: 978-0072465631
3rd edition
Authors: Raghu Ramakrishan, Johannes Gehrke, Scott Selikoff
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