What does the logical expression "quantity is less than 20" consist of?

The logical expression "quantity is less than 20" consists of a field, a constant, and a comparison operator. In this context, "quantity" represents the field or variable being evaluated. The number "20" is a constant that sets the threshold for comparison. The phrase "is less than" serves as the comparison operator that establishes the relationship between the field and the constant.

By combining these three components—a field (quantity), a constant (20), and a comparison operator (less than)—the expression effectively conveys a specific condition that can be evaluated in logical terms. This construction is fundamental in many programming and data-query contexts, allowing clear and precise conditions for filtering or decision-making processes.