Data Integration and Access
Advances in Digital GovernmentAdvances in Database Systems(2002)
摘要
This chapter describes the progress of the Digital Government Research Center in tackling the challenges of integrating and
accessing the massive amount of statistical and text data available from government agencies. In particular, we address the
issues of database heterogeneity, size, distribution, and control of terminology. In this chapter we provide an overview of
our results in addressing problems such as (1) ontological mappings for terminology standardization, (2) data integration
across data bases with high speed query processing, and (3) interfaces for query input and presentation of results. The DGRC
is a collaboration between researchers from Columbia University and the Information Sciences Institute of the University of
Southern California employing technology developed at both locations, in particular the SENSUS ontology, the SIMS multi-database
access planner, the LEXING automated dictionary and terminology analysis system, the main-memory query processing component
and others. The pilot application targets gasoline data from the Bureau of Labor Statistics, the Energy Information Administration
of the Department of Energy, the Census Bureau, and other government agencies.
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关键词
multi-database systems,ontologies,data integration,data integrity,database system
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