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Data Zones
Data zones are a new geography used for small area reporting in Scotland. They are built from 2001 Census Output Areas and are subdivisions of the 'intermediate geography'. Each data zone contains at least 500 residents. As with their Super Output Area (SOA) counterparts in the rest of the UK, data zones are intended to be a stable geography.
Further information on data zones
Digital Boundaries
Digital boundaries are electronic (as opposed to paper) records of geographic boundaries. Digital boundary sets can be used in geographic information systems (GIS) to create maps or to facilitate data analysis.
Digital National Framework (DNF)
The Digital National Framework (DNF) is a nationally consistent geographic referencing system for Great Britain. All geographic features that have been surveyed and captured by Ordnance Survey are included - examples include buildings, roads, fields, rivers, woods etc. Each feature in the DNF has a unique topographic identifier (TOID), to which any data item can be referenced.
Directorate of Health and Social Care (DHSC)
The 4 Directorates of Health and Social Care (DHSCs) were established on 1 April 2002 and abolished on 1 July 2003. They were part of the Department of Health and were each responsible for a number of Strategic Health Authorities (SHAs). Each DHSC covered one or more Government Office Regions (GORs).
Further health geography information, including maps and lists of area names and codes.
Disclosure
Disclosure in statistical terms refers to the release of data which could be traced to a particular individual. As it is critical that data supplied in confidence remains so, disclosure control is fundamental to National Statistics outputs. This explains for example why Census Output Areas (OAs) must have a certain minimum size.
District
Districts are local administrative units and have at various times been used in all four countries of the UK. The only current references to districts however are found in metropolitan and non-metropolitan districts in England, and district council areas in Northern Ireland.
Metropolitan districts
Non-metropolitan (local authority) districts
District council areas - see below
Further information on UK administrative geography, including maps and lists of area names and codes.
District Council Area
26 district council areas were established across the whole of Northern Ireland in 1996. Their respective councils form the single tier of local government in Northern Ireland.
Within Northern Ireland, district council areas are also commonly known as 'local government districts' (LGDs).
Further information on Northern Irish administrative geography, including a map and lists of area names and codes.
District Health Authority (DHA)
District Health Authorities (DHAs) were the lower tier of NHS administration in England between 1982 and 1996, when they were replaced by Health Authorities (HAs).
Further health geography information
Division
See electoral ward / electoral division and also county electoral division.
This page last revised: Thursday 21 April 2005
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