Sciweavers

71 search results - page 2 / 15
» RankSQL: Query Algebra and Optimization for Relational Top-k...
Sort
View
TDM
2004
174views Database» more  TDM 2004»
13 years 6 months ago
Relational Approach to Logical Query Optimization of XPath
To be able to handle the ever growing volumes of XML documents, effective and efficient data management solutions are needed. Managing XML data in a relational DBMS has great pote...
Maurice van Keulen
SIGMOD
1993
ACM
140views Database» more  SIGMOD 1993»
13 years 9 months ago
Second-Order Signature: A Tool for Specifying Data Models, Query Processing, and Optimization
Abstract: We propose a framework for the specification of extensible database systems. A particular goal is to implement a software component for parsing and rule-based optimizatio...
Ralf Hartmut Güting
AMW
2009
13 years 6 months ago
Identifying Algebraic Properties to Support Optimization of Unary Similarity Queries
Conventional operators for data retrieval are either based on exact matching or on total order relationship among elements. Neither of them is appropriate to manage complex data, s...
Mônica Ribeiro Porto Ferreira, Agma J. M. Tr...
SIGMOD
2002
ACM
141views Database» more  SIGMOD 2002»
13 years 5 months ago
Bringing Order to Query Optimization
A variety of developments combine to highlight the need for respecting order when manipulating relations. For example, new functionality is being added to SQL to support OLAP-styl...
Giedrius Slivinskas, Christian S. Jensen, Richard ...
VLDB
1992
ACM
151views Database» more  VLDB 1992»
13 years 9 months ago
A Uniform Approach to Processing Temporal Queries
Research in temporal databases has mainly focused on defining temporal data models by extending existing models, and developing access structures for temporal data. Little has bee...
Umeshwar Dayal, Gene T. J. Wuu