Validation is an automatic computer check to ensure that the data entered is sensible and reasonable. It does not check the accuracy of data. For example, a secondary school student is likely to ...

Excel's data validation feature is more versatile ... functions to restrict values accepted (or rejected) by a validation control. Our examples were all single-cell controls to keep things simple.

Have you ever wondered how to bring fairness to the classroom using "data validation" and "data quality ... "Designing Data Products," for example. As demand grew, we expanded the course to ...