+Data validation is the process of ensuring that data is clean, correct, and useful. It checks data against predefined rules, maintaining [Data Integrity](/wiki/data_integrity) and preventing errors before [Data Processing](/wiki/data_processing).
+## See also
+- [Data Quality](/wiki/data_quality)
+- [Data Cleansing](/wiki/data_cleansing)
+- [Error Checking](/wiki/error_checking)