If you've used data validation in Excel before, you probably selected the relevant cells, clicked "Data Validation" in the ...

Validation refers to a set of activities that ensure that software that has been built is traceable to the customer requirements. "Are we building the right product?" "Confirmation by examination and ...

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 be ...