This data is not intended to reflect the exact delivery format of the schema 9 data (see the schema 9 data for that). Instead, it shows the changes to the content of OS Mastermap Topography Layer. It contains three GML files:
- A full supply of data for Exeter conforming to version 7 of the schema (i.e. containing no new descriptive term combinations).
- A change only update (COU) file to update the version 7 full supply with new descriptive terms – this mirrors the way that the new descriptive terms content will be rolled out as COUs.
- A full supply of data for Exeter conforming to version 9 of the schema. Applying the COU file to the version 7 full supply should result in the version 9 full supply.