492 search results - page 76 / 99 » Computing aggregations in database query languages |
SAC
2006
ACM
14 years 3 months ago
2006
ACM
Traditional semantic web query languages support a logicbased access to the semantic web. They offer a retrieval (or reasoning) of data based on facts. On the traditional web and...
ICDE
2002
IEEE
14 years 11 months ago
2002
IEEE
XML and other semi-structured data may have partially specified or missing schema information, motivating the use of a structural summary which can be automatically computed from ...
ICDT
1997
ACM
14 years 2 months ago
1997
ACM
We develop a new schema for unstructured data. Traditional schemas resemble the type systems of programming languages. For unstructured data, however, the underlying type may be mu...
CHI
2002
ACM
14 years 10 months ago
2002
ACM
HANDS is a new programming system for children that was designed for usability. This paper examines the effectiveness of three features of HANDS: queries, aggregate operations, an...
ICDT
2012
ACM
12 years 8 days ago
2012
ACM
In a recent paper by Hellerstein [15], a tight relationship was conjectured between the number of strata of a Datalog¬ program and the number of “coordination stages” require...