Some
substantial achievements have already been done in this area and some attempts
have been made towards implementing DWs for stream data (Stream, 2006).
As it can be clearly observed, there are multiple kinds of data warehouses (relational,
XML, spatial, stream) storing data of different formats and offering different
functionality. Users of these technologies are often interested in combining data
coming from multiple DWs. This requirement leads to the problem of integrating
heterogeneous DWs (Torlone & Panella, 2005).
Book Objectives
The goal of this book is to provide an insight into important research and technological
problems, solutions, and development trends in the field of data warehousing
and OLAP. The content of the book encompasses important aspects of these
technologies, from a DW designing and implementing, via data integration, loading,
and DW refreshing, advanced query optimization techniques, to new areas of DW
application. As such, the book:
xiv
??? Provides the current state of the research and technology in the aforementioned
domains,
??? Constitutes a resource of possible solutions and technologies that can be applied
when designing, implementing, and deploying a DW, and
??? Serves as an up-to-date bibliography of published works for anyone interested
in cutting-edge DW and OLAP issues.
Since the book covers a wide range of technical, technological, and research issues
concerning DW and OLAP technologies, it is intended for data warehouse designers,
administrators, programmers, and project managers.
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