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SIGMOD
2005
ACM
15 years 3 months ago
2005
ACM
Recursion represents an important addition to the SQL language. This work focuses on the optimization of linear requeries in SQL. To provide an abstract framework for discussion, ...
APWEB
2009
Springer
15 years 1 months ago
2009
Springer
Keyword search in relational databases has recently emerged as a new research topic. As a search result is often assembled from multiple relational tables, existing IR-style rankin...
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SIGMOD
2007
ACM
15 years 10 months ago
2007
ACM
A "sparse" data set typically has hundreds or even thousands of attributes, but most objects have non-null values for only a small number of these attributes. A popular ...
ER
2004
Springer
15 years 3 months ago
2004
Springer
Abstract. Past research work on modeling and managing temporal information has, so far, failed to elicit support in commercial database systems. The increasing popularity of XML oï...
VLDB
1997
ACM
15 years 2 months ago
1997
ACM
In recentyears,databaseresearchandproduct developmentactivities havefocusedonsupport for non-traditional data types, such astext or multi-media documents.This paper describes an a...