The data that are provided by the registries are imported into a MS-SQL-server database. The data are stored in a fixed format and uniformisation steps are performed during the import procedure. This guarantees a uniform view on the data for each country.
The data model used is quite simple: basically, there are five entities:
The registry data are imported using a locally developed import-utility. This program first uniforms the data, then translates any non-standard codes. After the translations, the data are checked and finally imported into the database. The program performs extensive logging and the logging results can be used for feedback to the registries concerning inconsistencies, or other problems in the data.