VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Research in modeling and querying spatial data has primarily focused on traditional "crisp" spatial objects with exact location and spatial extent. More recent work, how...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Ontology, an explicit specification of shared conceptualization, has been increasingly used to define formal data semantics and improve data reusability and interoperability in en...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
We propose XRPC, a minimal XQuery extension that enables distributed yet efficient querying of heterogeneous XQuery data sources. XRPC enhances the existing concept of XQuery func...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
We propose a novel string search algorithm for data stored once and read many times. Our search method combines the sublinear traversal of the record (as in Boyer Moore or Knuth-M...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
When integrating data from heterogeneous sources, it is often necessary to transform both the schemas and the data from the underlying sources in order to present the integrated d...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Many aspects of the data integration problem have been considered in the literature: how to match schemas across different data sources, how to decide when different records refer...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
An optimization query asks for one or more data objects that maximize or minimize some function over the data set. We propose a general class of queries, model-based optimization ...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Incompleteness due to missing attribute values (aka "null values") is very common in autonomous web databases, on which user accesses are usually supported through media...