Terms and Definitions#
For the purposes of this document, the following terms and definitions apply:
- client#
A software component that can invoke an operation from a server
- CMR#
The Common Metadata Repository is the database system used to manage earth science metadata records for the IDN.
- collection#
A grouping of granules that all come from the same source, such as a modeling group or institution. Collections have information that is common across all the granules they “own” and a template for describing additional attributes not already part of the metadata model.
- data clearinghouse#
The collection of institutions providing digital data, which can be searched through a single interface using a common metadata standard
- dataset#
Has the same meaning as collection
- GCMD Keywords#
The Global Change Master Directory (GCMD) Keywords are a hierarchical set of controlled Earth Science vocabularies that help ensure Earth science data, services, and variables are described in a consistent and comprehensive manner and allow for the precise searching of metadata and subsequent retrieval of data, services, and variables.
- granule#
The smallest aggregation of data that can be independently managed (described, inventoried, and retrieved). Granules have their own metadata model and support values associated with the additional attributes defined by the owning collection. A granule usually matches the individual file of EO satellite data.
- Granule Gateway#
A CEOS OpenSearch compliant server providing access to remote data partner inventory systems.
- granule ID#
A character string that uniquely identifies a single granule to a granule gateway
- identifier#
A character string that may be composed of numbers and characters that is exchanged between the client and the server with respect to a specific identity of a resource
- IDN#
The CEOS International Directory Network (IDN) is a gateway to earth science data and services.
- IDN collection ID#
Unique collection identifier in IDN, returned from the IDN in response to the OSDD request. This identifier is assigned by the IDN CMR database.
- native ID#
Collection identifier used by CWIC and FedEO to retrieve granule metadata through data provider API. This identifier is assigned by the data provider but may be the same as the CMR collection ID.
- operation#
The specification of a transformation or query that an object may be called to execute
- OSDD#
OpenSearch Description Document
- profile#
A set of one or more base standards and - where applicable - the identification of chosen clauses, classes, subsets, options and parameters of those base standards that are necessary for accomplishing a particular function
- request#
The invocation of an operation by a client
- response#
The result of an operation, returned from server to client