Description: Field validation is the process of ensuring that the data entered in a field meets certain established criteria. This process is fundamental for maintaining database integrity, as it ensures that the stored information is accurate, consistent, and relevant. Validation can include a variety of criteria, such as data type (numbers, text, dates), format (like an email address or phone number), and specific constraints (like a range of values or the requirement of certain fields). By implementing field validation, data entry errors are minimized, information quality is improved, and subsequent analysis is facilitated. Additionally, validation can occur both on the client side, where information is checked before being sent to the server, and on the server side, where further checks are performed to ensure that the data meets the defined rules. In summary, field validation is an essential practice in database management that contributes to the reliability and effectiveness of information systems.
