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The Primary Key consisting of two or more attributes is called Composite Key.

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Data redundancy occurs when the same piece of data exists in multiple places, whereas data inconsistency is when the same data exists in different formats in multiple tables

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Data integrity is a concept and process that ensures the accuracy, completeness, consistency, and validity of an organization's data

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Explanation

Hexadecimal is the name of the numbering system that is base 16

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A 3 to 8 decoder has three inputs (A, B, C) and eight outputs (D0 to D7).

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GIGO: Garbage In Garbage Out

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Turnaround time is the sum of the periods spent waiting to get into memory, waiting in the ready queue, executing on the CPU.

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JMP instruction transfers the flow of execution by changing the program counter.

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A choke packet is a packet sent by a node to the source to inform it of congestion.