325 search results - page 7 / 65 » HyperGraphDB: A Generalized Graph Database |
PODS
1993
ACM
14 years 21 days ago
1993
ACM
In this paper we consider the problem of using disk blocks efficiently in searching graphs that are too large to fit in internal memory. Our model allows a vertex to be represented...
SIGMOD
2005
ACM
14 years 2 months ago
2005
ACM
Recursion represents an important addition to the SQL language. This work focuses on the optimization of linear requeries in SQL. To provide an abstract framework for discussion, ...
SACMAT
2004
ACM
14 years 2 months ago
2004
ACM
In order to provide a general access control methodology for parts of XML documents, we propose combining rolebased access control as found in the Role Graph Model, with a methodo...
XSYM
2004
Springer
14 years 1 months ago
2004
Springer
A key step in the optimization of declarative queries over XML data is estimating the selectivity of path expressions, i.e., the number of elements reached by a specific navigatio...
GIS
2006
ACM
14 years 9 months ago
2006
ACM
In this paper we describe work on the automatic recognition of island structures. In an initial phase several test persons were asked to mark groups of islands that they perceived...