Use Excel data validation to prevent duplicate values in a column Your email has been sent Prevent duplicates before they happen by combining a simple function with data validation. Excel has built-in ...

When you update this spreadsheet with new or different data, you won’t have to re-create the validation rule, but you will need to click Circle Invalid Data again. This tool would be useful to bring ...

Marketing is built on one essential element: accurate information. As marketers, we're always collecting and analyzing data to understand customer behaviors, preferences, and trends. That information ...

Discover how a custom data validation tool is transforming education. Learn how we applied statistics to achieve fairness in peer reviews. See how we successfully scaled the "Design Data Products ...

If you see the error “This value doesn’t match the data validation restrictions defined for this cell” when entering a value in an Excel cell, the solutions ...

Take advantage of data annotations to decorate your models using attribute tags so that your application’s data definition can be managed in a single place.