The ABCD schema is highly structured in order to manage the large quantity of data that a record may contain. The technical data specification is cast as an XML schema. This standard is promoted by GBIF for use globally. ABCD version 2 is a TDWG standard, which has been ratified by the annual TDWG meeting in September 2005. The elements and concepts that are used provide as much compatibility as is possible with other standards in the field of biological collection data, such as HISPID, Darwin Core, and others. Likewise, taxon-related information, such as distribution range, indicator values, etc., is also not included.
ABCD deliberately does not cover taxonomic data, such as synonymy, other than the use of names in identifications.
It is not expected (or even possible) for any collection to use more than a fraction of the elements defined in the standard.Ī design goal was to be both comprehensive and general, to include a broad array of concepts that might be available in a collection database, but to mandate only the bare minimum of elements required to make the specification functional. ABCD provides a standard set of element names and their definition for scientists and curators to use. The set of elements used varies from collection to collection. taxon, altitude, sex) and collection specific (e.g. It is intended to support the exchange and integration of detailed primary collection and observation data.Īll of the world's biological collections contain a number of data items including specimen specific (e.g. ABCD - Access to Biological Collection Data - Schema is a common data specification for biological collection units, including living and preserved specimens, along with field observations that did not produce voucher specimens.
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