Implementing Interoperability Infrastructures: Issues and Challenges from the Citizens' Base Registry in Greece

As the need for interoperability infrastructures and services is more and more stressed by researchers and practitioners in e-Government, Base Registries, as fully electronic, centralized repositories of information for classes of entities, pose as an infrastructure that can support aggregate electronic services delivery. In the presented approach, a Base Registry storing the citizen records is designed to integrate the legacy databases of 1,034 municipalities and is opened up to support the provision of electronic services towards governmental organizations. Discussion on the results is targeting at best practice examples that can be drawn at scientific and organizational level, but also at the key difficulties that have to be tackled in such public sector information reuse approaches - in relevance with the administrations and industry readiness in each country, in order to fulfill one of the principal conditions for pan-European Public Services.