61 search results - page 5 / 13 » Managing and querying transaction-time databases under schem... |
VLDB
2004
ACM
13 years 11 months ago
2004
ACM
The widespread adoption of XML holds out the promise that document structure can be exploited to specify precise database queries. However, the user may have only a limited knowle...
VLDB
2005
ACM
14 years 6 months ago
2005
ACM
XML database systems emerge as a result of the acceptance of the XML data model. Recent works have followed the promising approach of building XML database management systems on un...
ICDE
2006
IEEE
14 years 7 months ago
2006
IEEE
XML schema design has two opposing goals: elimination of update anomalies requires that the schema be as normalized as possible; yet higher query performance and simpler query exp...
SIGMOD
2008
ACM
13 years 6 months ago
2008
ACM
The UQBE is a mashup tool for non-programmers that supports query-by-example (QBE) over a schema made up by the user without knowing the schema of the original sources. Based on a...
PODS
2008
ACM
14 years 6 months ago
2008
ACM
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...