708 search results - page 10 / 142 » Optimizing SQL Queries over Text Databases |
ICDE
2012
IEEE
11 years 10 months ago
2012
IEEE
— XML is commonly supported by SQL database systems. However, existing mappings of XML to tables can only deliver satisfactory query performance for limited use cases. In this pa...
ICDE
2006
IEEE
14 years 1 months ago
2006
IEEE
In this paper, we study SQL queries with aggregate subqueries that share common tables and conditions with the outer query. While several approaches can deal with such queries, th...
EDBT
2002
ACM
14 years 7 months ago
2002
ACM
With the emergence of applications that require content-based similarity retrieval, techniques to support such a retrieval paradigm over database systems have emerged as a critica...
ICDE
2007
IEEE
14 years 8 months ago
2007
IEEE
Optimizing nested queries is an intricate problem. It becomes even harder if in a nested query the linking predicate or the correlation predicate occurs disjunctively. We present ...
EDBT
2008
ACM
14 years 7 months ago
2008
ACM
In this paper we address the problem of ensuring the correctness of query results returned by an untrusted private database. The database owns the data and may modify it at any ti...