In order to modify the Catalogue schema, please follow the following steps.
1. Modify the **CTA_CATALOGUE_SCHEMA_VERSION_MAJOR** and the **CTA_CATALOGUE_SCHEMA_VERSION_MINOR** variables that are located in the directory *cmake/CTAVersions.cmake*.
1. Modify the **CTA_CATALOGUE_SCHEMA_VERSION_MAJOR** and the **CTA_CATALOGUE_SCHEMA_VERSION_MINOR** variables that are located in the directory *cmake/CTAVersions.cmake*. Update *ReleaseNotes.md* to reflect schema change.
2. Run the build of CTA
--> It will create a new folder that will be named according to the schema versions variables modified at step 1. (Example: if the new schema version is 1.1, the directory 1.1 will be created in the catalogue directory).