Data Validation

Data validation is the process of ensuring that correct and useful data is collected Often data validation can be defined through data rules or business rules. Data that does not conform to these rules might negatively affect business process execution so it must be screen before input into the business process. Therefore, data validation should start with business process definition and a set of business rules within this process. These rules are collected through the requirements capture exercise. The simplest data validation verifies that the characters provided come from a valid data set. For example; telephone numbers, postcode or national insurance number.