Found 8 schemes used for this type of data.
By using DCAT to describe datasets in data catalogs, publishers are using a standard model and vocabulary that facilitates the consumption and aggregation of metadata from multiple catalogs, and in doing so can increase the discoverability of datasets. It also makes it possible to have a decentralized approach to publishing data catalogs and makes federated search for datasets across catalogs in multiple sites possible using the same query mechanism and structure. Aggregated DCAT metadata can serve as a manifest file as part of the digital preservation process.
The Registry Interchange Format – Collections and Services (RIF-CS) schema was developed as a data interchange format for supporting the electronic exchange of collection and service descriptions. It is a profile of ISO 2146, an information model for registry services for libraries and related organisations, adapting it for use in the research data context.
It was originally developed by the Australian National Data Service for use with Research Data Australia and the Research Data Australia Registry.