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» Answering XML Queries on Heterogeneous Data Sources
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122
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AICOM
2004
100views more  AICOM 2004»
15 years 11 days ago
Query rewriting with symmetric constraints
Abstract. We address the problem of answering queries using expressive symmetric inter-schema constraints which allow to establish mappings between several heterogeneous informatio...
Christoph Koch
101
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VLDB
2002
ACM
118views Database» more  VLDB 2002»
15 years 3 days ago
Translating Web Data
We present a novel framework for mapping between any combination of XML and relational schemas, in which a high-level, userspecified mapping is translated into semantically meanin...
Lucian Popa, Yannis Velegrakis, Renée J. Mi...
93
Voted
ISTA
2001
15 years 1 months ago
A Technique for Information System Integration
: Nowadays, a central topic in database science is the need of an integrated access to large amounts of data provided by various information sources whose contents are strictly rel...
Sergio Greco, Luigi Pontieri, Ester Zumpano
SIGMOD
2004
ACM
149views Database» more  SIGMOD 2004»
16 years 19 days ago
Incremental Maintenance of XML Structural Indexes
Increasing popularity of XML in recent years has generated much interest in query processing over graph-structured data. To support efficient evaluation of path expressions, many ...
Ke Yi, Hao He, Ioana Stanoi, Jun Yang 0001
AIMSA
2010
Springer
15 years 2 months ago
Expressive Approximations in DL-Lite Ontologies
Abstract. Ontology based data access (OBDA) is concerned with providing access to typically very large data sources through a mediating conceptual layer that allows one to improve ...
Elena Botoeva, Diego Calvanese, Mariano Rodriguez-...