6894 search results - page 1020 / 1379 » Generation Problems |
278
click to vote
SIGMOD
2006
ACM
16 years 6 months ago
2006
ACM
The current SQL standard for access control is coarse grained, in that it grants access to all rows of a table or none. Fine-grained access control, which allows control of access...
198
click to vote
SIGMOD
2004
ACM
16 years 6 months ago
2004
ACM
We study the problem of answering queries through a target schema, given a set of mappings between one or more source schemas and this target schema, and given that the data is at...
214
click to vote
SIGMOD
2003
ACM
16 years 6 months ago
2003
ACM
We consider the problem of approximating sliding window joins over data streams in a data stream processing system with limited resources. In our model, we deal with resource cons...
179
click to vote
SIGMOD
2003
ACM
16 years 6 months ago
2003
ACM
One of the critical deficiencies of SQL is lack of support for ndimensional array-based computations which are frequent in OLAP environments. Relational OLAP (ROLAP) applications ...
155
click to vote
SIGMOD
2002
ACM
16 years 6 months ago
2002
ACM
Scaling up to the enormous and growing Internet population with unpredictable usage patterns, Ecommerce applications face severe challenges in cost and manageability, especially f...