210 search results - page 9 / 42 » Complex Group-By Queries for XML |
SIGMOD
2001
ACM
14 years 8 months ago
2001
ACM
Managing multiple versions of XML documents represents an important problem, because of many applications ranging from traditional ones, such as software configuration control, to...
DBISP2P
2006
Springer
14 years 8 days ago
2006
Springer
Abstract. This paper addresses the problem of data placement, indexing, and querying large XML data repositories distributed over an existing P2P service infrastructure. Our archit...
ICDT
2011
ACM
13 years 1 days ago
2011
ACM
Distributed data management systems consist of peers that store, exchange and process data in order to collaboratively achieve a common goal, such as evaluate some query. We study...
JAPLL
2010
13 years 7 months ago
2010
We introduce the extended modal logic EML with regularity constraints and full Presburger constraints on the number of children that generalize graded modalities, also known as nu...
PLANX
2008
13 years 10 months ago
2008
We investigate the complexity of earliest query answering for n-ary node selection queries defined by streaming tree automata (STAs). We elaborate an algorithm that selects query ...