What is SDI?
Definition of the SDI concept and interventions to embody it
A Spatial Data Infrastructure is a group of technologies, politics, standards, services and human resources, necessaries for the compilation, manipulation, access, distribution and use of geographic data in different levels.
A SDI is a basis for the discovering of spatial data, its evaluation and its use by different kinds of users, either from public, or business, or academic, government or citizens sector.
Conceptually, the data infrastructure have the same purpose as the roads and highways: Improving the communications, making access easier, increasing the commerce, etc.
Traffic Infrastructure vs SDI comparison
| For improving the accessibility and use of cars |
For improving the access and use of geo-information |
| Avoiding getting lost |
Avoiding data duplication |
| Helps: Maps, signs |
Data storing or Clearinghouse |
| Drivers |
Data users |
| Spares |
Data sellers |
| Transport network (roads, tracks, bridges, etc.) |
Network Architecture |
| Garage |
Webservice |
| Vehicles |
Geo-data |
| Pārking |
Server |
| Driving License |
Qualified personnel |
| Traffic code |
Standards |
| Traffic regulations |
Politics + legislation |
| Politics (Traffic Control Center) |
Institutional framework (Geo-data Center) |
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A good road network infrastructure provides a better accessibility; this brings a better communication between regions and, therefore, an increase of commerce. This is, nevertheless, the SDI's purpose: Making the access and use of geographic information easier, and promoting its commerce.
Information about SDIs
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Centre de suport IDEC | Institut Cartogrāfic de Catalunya | Parc de Montjuīc- 08038 Barcelona | Tel. +34 93 567 15 00 - Fax. +34 93 567 15 67 e-mail: idec@icc.cat
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