The data standard covers Rural Revitalisation Areas (RZs).Rural Revitalisation Areas cover approximately 14,000 municipalities and make up 5 million inhabitants. They have constant characteristics of low population density and economic vulnerability, which should be compensated. For this reason, public policies have embarked on a system of measures to promote the maintenance or creation of economic activities and services. The scheme includes measures in favour of businesses, health professionals and organisations of general interest. Its purpose is to maintain and develop economic activities over the long term in areas considered demographically and economically vulnerable.ZRRs are tax-specific zones whose boundaries must meet the following conditions: 1) The municipality is a member of an EPCI with own taxation,2) The population density of the district or canton does not exceed 5 inhabitants per km² (ZRR with very low density), or the population density of the district does not exceed 33 inhabitants per km² (low density RRA), or the population density of the canton or territory covered by the EPCI does not exceed 31 inhabitants per km² (low density RRA),3) At least one of the following socio-economic criteria shall be met: decline of the population, decline of the labour force, high proportion of agricultural employment. An official decree prepared by the Interministerial Delegation for the Planning and Competitiveness of Territories (DIACT) establishes periodically the list of municipalities classified as ZRR. This scheme was created by the Law of 4 February 1995 (LOADT) on the development of rural areas. Law No. 2005-157 of 23 February 2005 on the development of rural territories stipulates, in its article 2 — II — point 1 that the Rural Revitalisation Zones (RRA) arrangements are to be evaluated in 2009.