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» Generating Multidimensional Schemas from the Semantic Web
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DGO
2003
113views Education» more  DGO 2003»
14 years 11 months ago
Resolving Schema and Value Heterogeneities for XML Web Querying
To query XML data over the Web, query engines need to be able to resolve semantic differences between heterogeneous attributes that are conceptually similar. This demo presents a ...
Nancy Wiegand, Naijun Zhou, Stephen J. Ventura, Is...
VLDB
2007
ACM
126views Database» more  VLDB 2007»
15 years 3 months ago
Scalable Semantic Web Data Management Using Vertical Partitioning
Efficient management of RDF data is an important factor in realizing the Semantic Web vision. Performance and scalability issues are becoming increasingly pressing as Semantic Web...
Daniel J. Abadi, Adam Marcus 0002, Samuel Madden, ...
EDBT
2009
ACM
102views Database» more  EDBT 2009»
15 years 4 months ago
On keys, foreign keys and nullable attributes in relational mapping systems
We consider the following scenario for a mapping system: given a source schema, a target schema, and a set of value correspondences between these two schemas, generate an executab...
Luca Cabibbo
DOCENG
2010
ACM
14 years 8 months ago
From templates to schemas: bridging the gap between free editing and safe data processing
In this paper we present tools that provide an easy way to edit XML content directly on the web, with the usual benefit of valid XML content. These tools make it possible to crea...
Vincent Quint, Cécile Roisin, Stépha...
VLDB
2004
ACM
144views Database» more  VLDB 2004»
15 years 10 months ago
Preserving mapping consistency under schema changes
Abstract. In dynamic environments like the Web, data sources may change not only their data but also their schemas, their semantics, and their query capabilities.When a mapping is ...
Yannis Velegrakis, Renée J. Miller, Lucian Popa