Metadata

Data describing a resource (the resource may be, for example, other data). Metadata provide information on the nature of data. Metadata that can be associated with a document are: its title, author, date of creation, etc. The National Service for Water Data and Reference-dataset Management (Sandre) produces metadata associated with reference datasets and specification documents. For example, the geographic metadata disseminated by Sandre are based on ISO standard 19115, and document metadata use the Dublin Core.