How data validation works:-
Setting Criteria: Users can define criteria for data entry, such as allowing only whole numbers, decimal numbers, dates, times, text of a certain length, or values from a predefined list.
Applying Data Validation: Data validation rules are applied to selected cells or ranges within the worksheet. This can be done by selecting the cells, then going to the "Data" tab on the Excel ribbon, clicking on "Data Validation," and choosing the desired criteria from the options provided.
Input Message: Users can optionally provide an input message that appears when a cell with data validation is selected. This message can provide instructions or guidance on the type of data to be entered.
Error Alert: Users can also set up an error alert to notify users if invalid data is entered into a cell with data validation. The error alert can display a warning message and prevent the entry of invalid data, or it can allow the user to proceed with the entry after receiving a warning.
List Validation: One common use of data validation is to create drop-down lists, where users can select values from a predefined list. This helps ensure data consistency and accuracy by restricting input to specific options.
Overall, data validation in Excel is a powerful tool for improving data quality and consistency by enforcing data entry rules and criteria. It helps minimize errors and ensures that the data entered into a worksheet meets the required standards.
