Global Directory Agent

Global Data Area

ACT Green Democratic Alliance

Geographic Document Architecture. Exchange mechanism (proposed) which organizes data into components called Content Architectures. This is similar to the concept of Office Document Architecture (ODA). GDA supposes that with many different standards for GIS interchange coming into existence and with there being little chance of convergence, some mechanism which separates content and carrier be devised. For each content type, a Content Architecture would be developed. For all Content Architectures, the same data coding and encapsulation techniques would be used.

See Geographical Data Analysis.

Geographical Data Analysis. A way of analysing data that explicitly incorporates information about location as well about attribute. This term may be used almost interchangeably with spatial analysis.

Government Department or Agency. This generic term also includes NDPBs and all other parts of UK central civil government.

See General Disposal Authority.

General Disposal Authority. See Disposal authority.

GEBCO Digital Atlas

Generic Digital Access. Non-hubbed digital access method. (7/96)

Geocentric Datum of Australia [look up