Why Do Relational Databases Use Primary Keys and Foreign Keys

question 88

Multiple Choice

Why do relational databases use primary keys and foreign keys?

• A) To create a database
• B) To create physical relationships
• C) To create logical relationships
• D) All of the above

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Definitions:

Andons

Visual feedback systems used in manufacturing to alert about any status changes in production, such as issues or slowdowns.

Visual Workplace

A work environment where information about processes and standards is communicated through visual means to improve understanding and efficiency.

Normal Time

The amount of time that a task should take under normal working conditions, often used in time studies for setting standard times in manufacturing or work scheduling.

Average Observed Time

The mean time recorded across multiple observations or instances of a specific task or process.