What are some of the data validation methodologies used in Data Analysis?

Today, a variety of data validation approaches are employed. Here are a few examples:

  • Field-level validation: Validation is performed on each field to verify that the data supplied by the user is free of mistakes.

  • Form-level validation: Validation is performed after the user has completed working with the form but before the data is stored.

  • Data saving validation: When a file or database record is saved, it undergoes this type of validation.

  • Search criteria validation: When a user searches for anything, this type of validation is used to ensure that genuine results are delivered.