The various types of data validation methods used are:
- Field Level Validation – validation is done in each field as the user enters the data to avoid errors caused by human interaction.
- Form Level Validation – In this method, validation is done once the user completes the form before a save of the information is needed.
- Data Saving Validation – This type of validation is performed during the saving process of the actual file or database record. This is usually done when there are multiple data entry forms.
- Search Criteria Validation – This type of validation is relevant to the user to match what the user is looking for to a certain degree. It is to ensure that the results are actually returned.