An Entity Whose Primary Key Depends on the Primary Key

question 128

Multiple Choice

An entity whose primary key depends on the primary key of another entity is called a:

• A)referential entity
• B)candidate entity
• C)transitive entity
• D)weak entity

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Definitions:

Output Field Device

Output field devices are components in a control system that receive signals from a controller to perform actions, such as actuators, valves, or lights, translating control signals into physical operations.

Programmed Logic

The application of logical operations to inputs to achieve a desired output, often implemented in programmable logic controllers (PLCs) or software.

XIC Instruction

A logical instruction used in PLC programming that stands for "Examine if Closed," checking if a condition is true (input or contact is on).

Reference Address

A specific location in memory used to store data or an instruction.