A Weak Entity Has a Primary Key That Is Partially

question 73

True/False

A weak entity has a primary key that is partially or totally derived from the parent entity in the relationship.

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Definitions:

Scan Time

The period required for a programmable logic controller (PLC) to read its inputs, execute its program, and update its outputs.

Sporadic Reliability

A term indicating an unpredictable level of reliability, where the performance or function of a system or component is irregular and not consistently dependable.

Hardwired Relay Schematic

A diagram that represents the physical wiring and logic connections of relays within a control system.