Remarks
Institutional identifier: Each record has a unique identifier built with three main elements: institution code, collection code (dataset) and register number (catalogue number). This identifier is also included in the URL assigned to each record.
All collections published at the UNAM open data portal have a metadata scheme with differente international standards reference. Most of their dictionaries can be consulted in spanish in the following page: https://dgru.unam.mx/index.php/portal-de-datos-abiertos-unam-colecciones-universitarias-2/