XML and Web Services technologies have revolutionized
the way data are exchanged on the Internet.
Meanwhile, Spatial OLAP (SOLAP) tools have emerged to
bridge the gap between the Business Intelligence and Geographic
Information Systems domains. While Web Services
specifications such as XML for Analysis enable the use of
OLAP tools in Service Oriented Architecture (SOA) environments,
no solution addresses the exchange of complete
SOLAP data cubes (comprising both spatial and descriptive
data and metadata) in an interoperable fashion.
This paper proposes a new XML grammar for the exchange
of SOLAP data cubes, containing both spatial and descriptive
data and metadata. It enables the delivery of the
cube schema, dimension members (including the geometry of
spatial members) and fact data. This XML format can be
used in the development of Web Services to be deployed in
various situations, not limited to traditional client-server platforms
but also ubiquitous mobile computing environments.