266 search results - page 6 / 54 » On first-order topological queries |
TOCL
2002
13 years 7 months ago
2002
One important class of spatial database queries is the class of topological queries, that is, queries invariant under homeomorphisms. Westudy topological queries expressible in th...
ICDT
1997
ACM
13 years 11 months ago
1997
ACM
We consider spatial databases and queries definable using first-order logic and real polynomial inequalities. We are interested in topological queries: queries whose result only ...
ICDE
2007
IEEE
14 years 8 months ago
2007
IEEE
We introduce the notion of a data topology and the problem of topology search over databases. A data topology summarizes the set of all possible relationships that connect a given...
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
We give semantic characterizations of the expressive power of navigational XPath (also called Core XPath) in terms of first order logic. XPath can be used to specify sets of nodes...
EDBTW
2006
Springer
13 years 11 months ago
2006
Springer
Abstract. In recent times, the proliferation of spatial data on the Internet is beginning to allow a much larger audience to access and share data currently available in various Ge...