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» Semantics in Spatial Databases
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VLDB
2002
ACM
166views Database» more  VLDB 2002»
13 years 8 months ago
COMA - A System for Flexible Combination of Schema Matching Approaches
Schema matching is the task of finding semantic correspondences between elements of two schemas. It is needed in many database applications, such as integration of web data source...
Hong Hai Do, Erhard Rahm
VLDB
2002
ACM
91views Database» more  VLDB 2002»
13 years 8 months ago
DTD-Directed Publishing with Attribute Translation Grammars
We present a framework for publishing relational data in XML with respect to a fixed DTD. In data exchange on the Web, XML views of relational data are typically required to confo...
Michael Benedikt, Chee Yong Chan, Wenfei Fan, Raje...
ER
2010
Springer
90views Database» more  ER 2010»
13 years 6 months ago
W-Ray: A Strategy to Publish Deep Web Geographic Data
Abstract. This paper introduces an approach to address the problem of accessing conventional and geographic data from the Deep Web. The approach relies on describing the relevant d...
Helena Piccinini, Melissa Lemos, Marco A. Casanova...
CORR
2011
Springer
160views Education» more  CORR 2011»
13 years 3 months ago
Provenance for Aggregate Queries
We study in this paper provenance information for queries with aggregation. Provenance information was studied in the context of various query languages that do not allow for aggr...
Yael Amsterdamer, Daniel Deutch, Val Tannen
CAISE
2003
Springer
14 years 1 months ago
Introducing Custom Language Extensions to SQL: 1999
Abstract. Even though SQL has become widely accepted as a language for implementing relational database schemas and querying data, there are cases where s experience the need for n...
Jernej Kovse, Wolfgang Mahnke