The Italian census geographic database: implementation, management, update procedures and dissemination P. G. TICCA Istat - Italy Luxembourg 8-9 March 2010

CENSUS2010-2011 Agenda The Italian census geographic database The importance of technology in the production process to update the GeoDataBase and the GIS software products used The different steps of the production process The website http://basiterritoriali.istat.it/ to support the interaction with the municipalities

The Italian census geographic database Design and implementation of a Geographic DataBase Design and implementation of a national spatial continuum: Design and implementation of the software to support the process of updating the census geographic data Design and implementation of the system to support interaction with the municipalities to “validate” the geoDataBase

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The geographic database CENSUS2010-2011 The geographic database All the spatial (geographic) data stored inside a DBMS (Oracle) In the past years the geographic census data were store into file-based structure with all related problems of management, duplication of data, security, … Geometry is a complex attribute, so to be stored inside a DBMS table it needs a specific software to be managed. Nowadays GIS software can do this, and GIS DB can be managed and integrated inside a DBMS.

The spatial continuum and the concurrent updating CENSUS2010-2011 The spatial continuum and the concurrent updating Updating of different provinces without need of merging the data (mosaic) Concurrent editing on the same data, using DBMS “versioning” and “reconciling” techniques Easy control of the adjacency Less time to manage the whole GeoDB

The versiong of data to perform concurrent editing CENSUS2010-2011 The versiong of data to perform concurrent editing

The GIS software products CENSUS2010-2011 The GIS software products Advanced GIS tools for both client and server side systems. GIS Desktop on client side, customized with ‘ad hoc’ VBA programs Server side GIS technology to manage the Oracle - GeoDB GIS app-server, based on modern concept of SOA to distribute GeoData as “WebServices” for both images and vector data Use of powerful “caching” mechanism to speed performances

CENSUS2010-2011 A big amount of image data “cached and served” by GIS the application server based on the concept of WebServices

Client side: the updating process based CENSUS2010-2011 Client side: the updating process based

The system to support interaction with the municipalities CENSUS2010-2011 The system to support interaction with the municipalities The production of PDF layout showing the updates Roma, 27 marzo 2009

The system to support interaction with the municipalities CENSUS2010-2011 The system to support interaction with the municipalities The production of PDF layout showing the updates

The system to support interaction with the municipalities CENSUS2010-2011 The system to support interaction with the municipalities The website http://basiterritoriali.istat.it A free-ware (PDF-Xchange Viewer) to add digital notes on PDF layout File exchange through a website Final revision and data “validation” using the digital notes suggested from the municipalities Data dissemination through a WebGIS

Il sito https://basiterritoriali.istat.it CENSUS2010-2011 Il sito https://basiterritoriali.istat.it Roma, 27 marzo 2009

Il sito https://basiterritoriali.istat.it CENSUS2010-2011 Il sito https://basiterritoriali.istat.it Roma, 27 marzo 2009

CENSUS2010-2011 Prototype of a WebGIS Roma, 27 marzo 2009