Define Primary Key,foreign Key,and Relational Databases

question 106

Essay

Define primary key,foreign key,and relational databases:

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Definitions:

Stopwatch Study

A time measurement method where a stopwatch is used to record the time taken for workers to complete tasks for the purpose of improving efficiency.

PDA

Personal Digital Assistant, a mobile device prior to smartphones, used for managing personal information, but now largely obsolete.

Spreadsheet

A spreadsheet is a digital tool that allows for the organization, analysis, and storage of data in tabular form.

Job Identity

Refers to the defining characteristics and duties that distinguish one job from another.