What is extreme data in programming?

Extreme data in programming refers to test data that is on the boundary of what a program will accept. This includes values that are at the limits of the input specifications defined for the software, such as the maximum and minimum values a variable can hold. Using extreme data in testing is crucial for evaluating how the system behaves under boundary conditions, ensuring it can handle edge cases without failing.

By testing with extreme data, developers can identify potential weaknesses or errors in their code that may arise when the application encounters inputs that are at the extremes of valid usage. This practice helps in improving the robustness and reliability of software, as it prepares the program to deal with real-world scenarios where inputs may often be at or near these limits.