Google Fusion Tables is a cloud-based service for data management and integration.
Fusion Tables enables users to upload tabular data les (spreadsheets, CSV, KML),
currently of up to 100MB. The system provides several ways of visualizing the data
(e.g., charts, maps, and timelines) and the ability to filter and aggregate the
data. It supports the integration of data from multiple sources by performing joins
across tables that may belong to dierent users. Users can keep the data private,
share it with a select set of collaborators, or make it public and thus crawlable
by search engines. The discussion feature of Fusion Tables allows collaborators to
conduct detailed discussions of the data at the level of tables and individual
rows, columns, and cells. This paper describes the inner workings of Fusion Tables,
including the storage of data in the system and the tight integration with the
Google Maps infrastructure.