Why is it essential to validate user inputs in Web forms?

Validating user inputs in web forms is crucial primarily to prevent errors in the database. When users fill out forms, they may enter data that is inconsistent, incorrect, or formatted improperly. If this data is submitted without validation, it can lead to issues such as database corruption, data entry errors, or even security vulnerabilities like SQL injection attacks. By ensuring that the input is accurate and meets predefined criteria before it reaches the database, web developers can maintain data integrity, enhance application reliability, and improve overall user experience. This proactive approach helps to avoid complications that could arise from invalid or harmful data being processed or stored.