In ABAP, what keyword is used to define a constant?

In ABAP, the keyword used to define a constant is "CONSTANTS." This keyword allows developers to declare a constant variable that holds a fixed value throughout the program's execution. Once a constant is defined, its value cannot be altered, ensuring that it maintains its integrity and reliability in the code.

Constants are beneficial in programming as they enhance code readability and maintainability by providing meaningful names to fixed values, allowing programmers to avoid "magic numbers" in their code. The use of "CONSTANTS" conveys the intention that the value is intended to remain unchanged, which is important for preventing any accidental modifications that could lead to bugs or unexpected behavior in the application.

The other choices represent concepts that are either unrelated or not used for defining constants in ABAP. "DEFINE" is typically associated with defining macros, "STATIC" is used for declaring statically allocated data that persists across calls, and "FINAL" is often related to ensuring that a class method cannot be overridden in subclasses. Thus, "CONSTANTS" stands out as the specific term used for defining constants in ABAP programming.