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» Ranking-based processing of SQL queries
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IDEAS
2005
IEEE
137views Database» more  IDEAS 2005»
14 years 4 months ago
Order-Sensitive XML Query Processing over Relational Sources: An Algebraic Approach
The XML data is order-sensitive. The order problem, that is how ordered XML documents and order-sensitive queries over it can be efficiently supported when mapped into the unorde...
Ling Wang, Song Wang, Brian Murphy, Elke A. Runden...
VLDB
1998
ACM
121views Database» more  VLDB 1998»
14 years 3 months ago
Hash Joins and Hash Teams in Microsoft SQL Server
The query execution engine in Microsoft SQL Server employs hash-based algorithms for inner and outer joins, semi-joins, set operations (such as intersection), grouping, and duplic...
Goetz Graefe, Ross Bunker, Shaun Cooper
ACE
2003
120views Education» more  ACE 2003»
14 years 7 days ago
Online Assessment of SQL Query Formulation Skills
Being able to formulate useful SQL queries is a fundamental skill required by many software development professionals. Mastering this skill is a difficult process, requiring consi...
Julia Coleman Prior
VLDB
2007
ACM
166views Database» more  VLDB 2007»
14 years 11 months ago
Supporting Time-Constrained SQL Queries in Oracle
The growing nature of databases, and the flexibility inherent in the SQL query language that allows arbitrarily complex formulations, can result in queries that take inordinate am...
Ying Hu, Seema Sundara, Jagannathan Srinivasan
DASFAA
2007
IEEE
205views Database» more  DASFAA 2007»
14 years 2 months ago
Efficient Support for Ordered XPath Processing in Tree-Unaware Commercial Relational Databases
Abstract. In this paper, we present a novel ordered XPATH evaluation in treeunaware RDBMS. The novelties of our approach lies in the followings. (a) We propose a novel XML storage ...
Boon-Siew Seah, Klarinda G. Widjanarko, Sourav S. ...