Document Validation
Document validation is a process in software development that ensures data conforms to predefined rules, formats, or schemas before it is processed, stored, or transmitted. It is commonly used in databases, APIs, and file handling to maintain data integrity, prevent errors, and enhance security by rejecting invalid or malicious inputs. This concept applies across various technologies, such as JSON schema validation, XML validation with DTD or XSD, and database constraints.
Developers should implement document validation to ensure data quality, prevent application crashes from malformed inputs, and protect against security vulnerabilities like injection attacks. It is essential in scenarios like API development (validating request payloads), data import/export processes, and user form submissions to enforce business rules and maintain system reliability. Without validation, systems risk corruption, inconsistent data, and exposure to exploits.