SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
This paper discusses ongoing research on scientific workflows at the Institute of Computing, University of Campinas (IC - UNICAMP) Brazil. Our projects with bio-scientists have le...
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
We describe an approach for pipelining nested data collections in scientific workflows. Our approach logically delimits arbitrarily nested collections of data tokens using special...
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
We give semantic characterizations of the expressive power of navigational XPath (also called Core XPath) in terms of first order logic. XPath can be used to specify sets of nodes...
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
: Workflow systems often present the user with rich interfaces that express all the capabilities and complexities of the application programs and the computing environments that th...
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
Peer-to-peer (p2p) systems are attracting increasing attention as an efficient means of sharing data among large, diverse and dynamic sets of users. The widespread use of XML as a...
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
Window queries are proving essential to data-stream processing. In this paper, we present an approach for evaluating sliding-window aggregate queries that reduces both space and c...
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
Web services technologies enable flexible and dynamic interoperation of autonomous software and information systems. A central challenge is the development of modeling techniques ...