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U.S.
Department of Transportation
Virtual
Data Warehousing (VDW)
§What is Virtual Data Warehousing?
□Functional,
virtual equivalent of conventional data warehouse (e.g., CPU time, storage space, operating systems, database)
□Allows
data to be integrated dynamically from heterogeneous data sources that are housed in different locations
□Allows
for rapid sharing of large amounts of data
□Minimizes
data integrity issues
□Requires
less time and expense to develop
§Promising Innovations in VDW Technology:
□Cloud
computing
□Data
federation