Question

What does RDF-3X's cost model include to optimize join paths?

a.

Statistical synopses for entire join paths

b.

Historical data of query performance

c.

Hardware specifications

d.

User-defined cost parameters

Posted under Big Data Computing

Answer: (a).Statistical synopses for entire join paths Explanation:RDF-3X's cost model includes statistical synopses for entire join paths to optimize query performance.

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