What Type of Primary Key Is System-Generated and Is Usually

question 49

Multiple Choice

What type of primary key is system-generated and is usually hidden from users?

• A) weak entity
• B) surrogate key
• C) natural key
• D) artificial key

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Definitions:

Variable-Interval

A schedule of reinforcement where a response is rewarded after an unpredictable amount of time has passed, in operant conditioning.

Fixed-Interval

A schedule in operant conditioning where rewards or responses are provided after a consistent and predictable amount of time has passed.

Variable-Ratio

A schedule of reinforcement where a response is reinforced after an unpredictable number of responses. This schedule creates a steady, high rate of responding.

Fixed-Interval

A reinforcement schedule in which the first response after a certain time period has passed is rewarded.