2859 search results - page 270 / 572 » Querying Complex Structured Databases |
283
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Supporting ranking queries in database systems has been a popular research topic recently. However, there is a lack of study on supporting ranking queries in data warehouses where...
181
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EDBT
2009
ACM
15 years 9 months ago
2009
ACM
In emerging applications such as location-based services, sensor monitoring and biological management systems, the values of the database items are naturally imprecise. For these ...
211
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DELOS
2000
15 years 8 months ago
2000
: We explore the complex problem of providing searching services across interoperable heterogeneous federated digital library systems with rich structure and content. We discuss sy...
172
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VLDB
2007
ACM
16 years 20 days ago
2007
ACM
Intuitively, aggressive work sharing among concurrent queries in a database system should always improve performance by eliminating redundant computation or data accesses. We show...
181
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ER
2008
Springer
15 years 8 months ago
2008
Springer
Modern information systems, and web information systems in particular, are faced with frequent database schema changes, which generate the necessity to manage them and preserve the...