The ______________Optimizes Query Execution Across Sites,coordinates Concurrency Control and Recovery

question 47

Short Answer

The ______________optimizes query execution across sites,coordinates concurrency control and recovery across sites,and controls access to remote data.

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Definitions:

Contingencies

Future events or circumstances that are possible but cannot be predicted with certainty.

Disjunction

A logical operation that yields true if at least one of its operands is true, typically expressed through the use of "or" in statements.

Disjuncts

The separate elements or options in a disjunctive proposition, any of which can make the entire proposition true.

Disjunction

A logical operation yielding a true value if at least one of its propositions is true.