Designing the geodatabase is that organizing and managing effectively the spatial geographic data to be de-scribed.In the process of designing the geodatabase,dealing with the validity of spatial data is the key step.Rule is an effective tool which can assure the data validity,so designing the rules of data validity for geodatabase is the preference tool to ensure the geographic data validity.The rules of geodatabase can be classified into attribute field rules,relation rules,and connection rules.This Paper...