Maps are only as good as the data used to make the map. Therefore it is important that there is a strong data infrastructure available to support mapping and other data use needs.
Data infrastructure refers to all available data and the systems in place to support the collection, maintenance and updating of that data. GIS can play a valuable role in strengthening the data infrastructure in two key ways. First, through its ability to link data sets using geographic identifier, GIS can provide linkages across different domains of the data infrastructure. Secondly, GIS can help identify data quality issues by facilitating mapping and analysis.