There are also modular approaches like CMDI [0] out there, that allows for constructing a metadata profile with a corresponding schema [1]. A single metadata st

There are also modular approaches like CMDI [0] out there, that allows for constructing a metadata profile with a corresponding schema [1]. A single metadata standard won't be able to cover all disciplines regardless. Too many free text fields that can't be properly validated. E.g. if you work with documenting minority languages, language ISO codes are vital (assuming one has been created for the language in question). [0]: https://www.clarin.eu/content/component-metadata [1]: https://www.clarin.eu/content/component-registry-documentation