Spreadsheets can also be pre-loaded with data from other data collections to compare with current data and providers can be asked to provide an explanation when a set validation check fails.
Gellir hefyd raglwytho taenlenni â data o gasgliadau data eraill er mwyn cymharu â data presennol a gellir gofyn i ddarparwyr roi esboniad pan fydd gwiriad dilysu set yn methu.