In Both Query Rewriting for Materialized Views and Query Modification

question 28

True/False

In both query rewriting for materialized views and query modification for traditional views,the query optimizer must evaluate whether the substitution will improve performance over the original query.

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Definitions:

RC Parallel Circuit

An electrical circuit composed of resistors and capacitors arranged in parallel, affecting current flow and charge distribution differently from series configurations.

Capacitive Reactance

Capacitive reactance is the measure of opposition that a capacitor offers to AC (alternating current), and it decreases with an increase in the frequency of the electric signal.

Resistive Current

The current that flows through a circuit with only resistive elements, directly proportional to the voltage across and inversely proportional to the resistance.

RC Parallel Circuit

An electrical circuit that consists only of a resistor (R) and a capacitor (C) connected in parallel, affecting the overall impedance and phase angle.