Geospatial mashups are applications that can display many sources of information and the geographical relationships among them. A mashup is a lightweight, Web-based, composite application, with no native data store or content repository. What makes a mashup geospatial is the ability to view multiple data repositories or even real-time data streams within a consistent geospatial context. Vendors may embed business intelligence (BI) functionality and in-memory online analytical processing (OLAP) in more comprehensive product offerings.
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