687 search results - page 49 / 138 » Query Transformation for PSJ-Queries |
IPAW
2010
13 years 6 months ago
2010
Data provenance graphs are form of metadata that can be used to establish a variety of properties of data products that undergo sequences of transformations, typically specified as...
SIGMOD
2006
ACM
14 years 8 months ago
2006
ACM
Recent data stream systems such as TelegraphCQ have employed the well-known property of duality between data and queries. In these systems, query processing methods are classified...
ICDE
1998
IEEE
14 years 10 months ago
1998
IEEE
Algebraic transformation and optimization techniques have been the method of choice in relational query execution, but applying them in OODBMS is difficult due to the complexity o...
MDM
2007
Springer
14 years 2 months ago
2007
Springer
This demonstration presents iPDA, a system to support privacy-preserving data access in location-based mobile services. The iPDA system consists of three main components: 1) a mob...
SIGMOD
1998
ACM
14 years 28 days ago
1998
ACM
Databases are increasingly being used to store multi-media objects such as maps, images, audio and video. Storage and retrieval of these objects is accomplished using multi-dimens...