What Special Value Is Used in SQL to Represent Cases

question 16

Multiple Choice

What special value is used in SQL to represent cases in which an actual value is unknown, unavailable, or not applicable?

• A) varchar
• B) empty
• C) not null
• D) null

---

Definitions:

Core Element

An essential part or component that is central to the function or structure of something.

Product Development Strategy

A business strategy focusing on developing new products or improving existing ones to meet market demand or create new markets.

Procurement

The process of obtaining goods, services, or works from external sources, often through a bidding or negotiation process.

Positioning

The strategy of creating a distinct image or identity for a product or brand in the customers' mind relative to competitors.