Which of the Following Is True About Indexes and Index

question 25

Multiple Choice

Which of the following is true about indexes and index design?

• A)indexes should be created on columns used by WHERE and BY clauses
• B)a composite index is an index on a single column
• C)an index is created for every foreign key by default
• D)indexes usually speed up write operations

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Definitions:

Preconventional Morality

The first level in Kohlberg's theory of moral development where individuals' moral reasoning is based mainly on the consequences of their actions and on the power of authority figures.

Neurotransmission

The process by which signaling molecules called neurotransmitters are released by a neuron and cross the synaptic gap to signal to another neuron.

Myelin

A fatty substance that encases and insulates nerve fibers, facilitating faster transmission of electrical impulses along neurons.

Frontal Lobe

The part of the brain located at the front of the cerebral cortex, responsible for higher cognitive functions like decision making, problem solving, and social behavior.