142 search results - page 14 / 29 » On Conjunctive Query Answering in EL |
ICDT
2003
ACM
14 years 3 months ago
2003
ACM
Abstract. Repairing a database means bringing the database in accordance with a given set of integrity constraints by applying modifications that are as small as possible. In the ...
ICDT
2012
ACM
12 years 6 days ago
2012
ACM
Previous studies of incomplete XML documents have identified three main sources of incompleteness – in structural information, data values, and labeling – and addressed data ...
ICDE
2012
IEEE
12 years 7 days ago
2012
IEEE
— Uncertainties in data arise for a number of reasons: when the data set is incomplete, contains conflicting information or has been deliberately perturbed or coarsened to remov...
CIKM
2008
Springer
13 years 11 months ago
2008
Springer
Time is an important dimension of relevance for a large number of searches, such as over blogs and news archives. So far, research on searching over such collections has largely f...
VLDB
2004
ACM
14 years 3 months ago
2004
ACM
Query containment is the most fundamental relationship between a pair of database queries: a query Q is said to be contained in a query Q if the answer for Q is always a subset of...