109 search results - page 4 / 22 » New Rewritings and Optimizations for Regular Path Queries |
ICDE
2010
IEEE
14 years 6 months ago
2010
IEEE
A fundamental problem in XML query processing is tree pattern query (TPQ) matching which computes all data instances in an XML database that match an input TPQ. There is a lot of r...
BDA
2004
13 years 7 months ago
2004
For around 10 years, the academic research in database has attempted to define a commonly agreed logical modeling for the multidimensional and hierarchical nature of data manipulat...
AIPS
1998
13 years 7 months ago
1998
We present the application of the Planning by Rewriting PbR framework to query planning in distributed and heterogeneous environments. PbR is a new paradigm for e cient high-quali...
ICDE
2009
IEEE
13 years 4 months ago
2009
IEEE
There is much effort to develop comprehensive support for the storage and querying of XML data in database management systems. The major developers have extended their systems to h...
SIGMOD
2004
ACM
14 years 6 months ago
2004
ACM
Current day database applications, with large numbers of users, require fine-grained access control mechanisms, at the level of individual tuples, not just entire relations/views,...