Constraints and Triggers: A Method for Ensuring Data Quality in an Object-Oriented Geo Database Kernel.

db/conf/gis/BeckerDHV99.html Ludger Becker Hendrik Ditt Klaus Hinrichs Andreas Voigtmann Constraints and Triggers: A Method for Ensuring Data Quality in an Object-Oriented Geo Database Kernel. 160-161 GIS1999/P160.pdf 1999 conf/gis/99 ACM-GIS http://doi.acm.org/10.1145/320134.326039 db/conf/gis/gis99.html#BeckerDHV99