550 search results - page 64 / 110 » An Expressive Language for Linear Spatial Database Queries |
EDBT
2008
ACM
14 years 8 months ago
2008
ACM
Scientific data are available through an increasing number of heterogeneous, independently evolving, sources. Although the sources themselves are independently evolving, the data ...
CORR
2011
Springer
13 years 3 months ago
2011
Springer
Abstract. We present a categorical denotational semantics for a database mapping, based on views, in the most general framework of a database integration/exchange. Developed databa...
BTW
2003
Springer
14 years 1 months ago
2003
Springer
Abstract: Optimization of nested queries, in particular finding equivalent “flattened” queries for queries that employ the SQL sub-query construct, has been researched extensiv...
ICDE
2012
IEEE
11 years 11 months ago
2012
IEEE
—Large graphs are used in many applications, such as social networking. The management of these graphs poses new challenges because such graphs are too large to fit on a single ...
CIDR
2009
13 years 9 months ago
2009
Natural language user interfaces to database systems have been studied for several decades now. They have mainly focused on parsing and interpreting natural language queries to ge...