7593 search results - page 149 / 1519 » Querying XML Databases |
170
click to vote
VLDB
2004
ACM
15 years 11 months ago
2004
ACM
This paper presents a novel and complementary technique to optimize an XPath query by minimizing its wildcard steps. Our approach is based on using a general composite axis called...
189
Voted
JCSS
2007
15 years 6 months ago
2007
Automata for unranked trees form a foundation for XML schemas, querying and pattern languages. We study the problem of efficiently minimizing such automata. First, we study unrank...
252
click to vote
ICDT
2009
ACM
16 years 6 months ago
2009
ACM
Graph-theoretic aggregation problems have been considered both in OLAP (grid graph) and XML (tree). This paper gives new results for MIN aggregation in a tree, where we want the M...
190
click to vote
EDBT
2009
ACM
15 years 10 months ago
2009
ACM
Structured data including sets, sequences, trees and graphs, pose significant challenges to fundamental aspects of data management such as efficient storage, indexing, and simila...
150
click to vote
ICDT
2007
ACM
16 years 6 days ago
2007
ACM
Abstract. In many cases, users may want to consider incomplete answers to their queries. Often, however, there is an overwhelming number of such answers, even if subsumed answers a...