Sciweavers

664 search results - page 115 / 133
» Answering order-based queries over XML data
Sort
View
SBBD
2001
119views Database» more  SBBD 2001»
15 years 1 months ago
The Dimension-Join: A New Index for Data Warehouses
There are several auxiliary pre-computed access structures that allow faster answers by reading less base data. Examples are materialized views, join indexes, B-tree and bitmap in...
Pedro Bizarro, Henrique Madeira
185
Voted
SIGMOD
2007
ACM
229views Database» more  SIGMOD 2007»
16 years 18 days ago
Spark: top-k keyword query in relational databases
With the increasing amount of text data stored in relational databases, there is a demand for RDBMS to support keyword queries over text data. As a search result is often assemble...
Yi Luo, Xuemin Lin, Wei Wang 0011, Xiaofang Zhou
CSFW
2011
IEEE
14 years 8 days ago
Dynamic Enforcement of Knowledge-Based Security Policies
—This paper explores the idea of knowledge-based security policies, which are used to decide whether to answer queries over secret data based on an estimation of the querier’s ...
Piotr Mardziel, Stephen Magill, Michael Hicks, Mud...
IFIP
2004
Springer
15 years 5 months ago
Behavioural Equivalences for Dynamic Web Data
Peer-to-peer systems, exchanging dynamic documents through Web services, are a simple and effective platform for data integration on the internet. Dynamic documents can contain b...
Sergio Maffeis, Philippa Gardner
VLDB
2002
ACM
154views Database» more  VLDB 2002»
15 years 3 days ago
I/O-Conscious Data Preparation for Large-Scale Web Search Engines
Given that commercial search engines cover billions of web pages, efficiently managing the corresponding volumes of disk-resident data needed to answer user queries quickly is a f...
Maxim Lifantsev, Tzi-cker Chiueh