Welsh Demographic Service Dataset (WDSD) - Legacy three-view version

Legacy metadata for the discontinued three-view WDSD version. The views now provisioned to new projects have 'SINGLE' in their title and are found in the main WDSD metadata entry, which is separate to this one. Administrative information about individuals in Wales that use NHS services; such as address and practice registration history. It replaced the NHS Wales Administrative Register (NHSAR) in 2009. Data drawn from GP practices via Exeter System. This dataset provides linkage from anonymous individual to anonymous residences, thus enable to group households of individuals.