Digitised boundary datasets (sometimes referred to as 'DBDs' or 'boundary data') are a digitised representation of the underlying geography of the census. They are often used within Geographical Information Systems (GIS) or Computer aided Designs (CAD) systems. For more information follow this link.
Output Area is the lowest geographical level at which census estimates are provided. Output Areas were introduced in Scotland at the 1981 Census and in all the countries of the UK at the 2001 Census.
Electoral Wards/Divisions are the key building blocks of UK administrative geography.
Local Authority is a generic term used to cover London Boroughs, Metropolitan Districts, Non-Metropolitan Districts, and Unitary Authorities in England; Unitary Authorities in Wales; Council Areas in Scotland; and Local Government Districts in Nor