A spatial data checking system based on quality rules

This paper describes the design and implementation of a spatial data checking system based on quality rules. A relational expression of defining quality rules is presented and new quality rules can be extended by using this structure. Methods of storing and parsing these quality rules for data checking are discussed. Based on this, a spatial data checking system is developed, in which extended data checking types can be defined and data checking tasks are made to execute automatic checking for spatial databases. The system has been applied to the construction of spatial databases in Jilin city and proved to be effective.