560 search results - page 23 / 112 » Kaleidoscope Data Model for An English-like Query Language |
CORR
2011
Springer
13 years 3 months ago
2011
Springer
We study in this paper provenance information for queries with aggregation. Provenance information was studied in the context of various query languages that do not allow for aggr...
SIGMOD
2009
ACM
14 years 9 months ago
2009
ACM
Empowering users to access databases using simple keywords can relieve the users from the steep learning curve of mastering a structured query language and understanding complex a...
EDOC
2011
IEEE
12 years 8 months ago
2011
IEEE
—In this paper, we present a UML metamodel-based approach for creating and executing workflow models. The modeling language is introduced through its abstract syntax, and an eval...
EDBT
2000
ACM
14 years 12 days ago
2000
ACM
the research activities. This abstract is to introduce the approach of a data model - EP data model. Its data structure is able to store as a finite set of nodes arbitrary effectiv...
ICALP
2005
Springer
14 years 2 months ago
2005
Springer
We study a clean machine model for external memory and stream processing. We show that the number of scans of the external data induces a strict hierarchy (as long as work space is...