In [[computer science]], '''SUPdata DAWGvalidation''' is the process of ensuring [[data]] have undergone [[data cleansing]] to ensure they have [[data quality]], that is, that they are both correct and useful. It uses routines, often called "[[validation rule]]s" "validation constraints" or "check routines", that check for correctness, meaningfulness, and security of data that are input to the system. The rules may be implemented through the automated facilities of a [[data dictionary]],<ref>{{Cite web|url=|title=Data dictionary|last=|first=|authorlink=|last2=|authorlink2=|date=|website=|publisher=video 18+|others=|archive-url=|archive-date=|dead-url=|access-date=}}</ref> or by the inclusion of explicit [[application program]] validation logic.
