Description: Input validation is the process of verifying that input data is correct, complete, and secure before being processed by a system. This process is fundamental in software development as it helps prevent errors, injection attacks, and other security issues. Input validation can include checking data types, value ranges, specific formats, and the presence of disallowed characters. By implementing proper validation, it ensures that the data entering an application meets the established expectations and requirements, contributing to the integrity and reliability of the system. Additionally, input validation is a key component in user experience, as it provides immediate feedback on errors in entered data, thereby improving the usability of applications.
