Let r and s be relations with no indices, and assume that the relations are not sorted.
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Let r and s be relations with no indices, and assume that the relations are not sorted. Assuming infinite memory, what is the lowest-cost way (in terms of I/O operations) to compute r ⋈ s? What is the amount of memory required for this algorithm?
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Related Book For 
Database System Concepts
ISBN: 9780078022159
7th Edition
Authors: Abraham Silberschatz, Henry F. Korth, S. Sudarshan
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