62 search results - page 4 / 13 » Optimization of Relational Schemas Containing Inclusion Depe... |
183
Voted
SIGMOD
2005
ACM
15 years 11 months ago
2005
ACM
Clio, the IBM Research system for expressing declarative schema mappings, has progressed in the past few years from a research prototype into a technology that is behind some of I...
175
Voted
PODS
2009
ACM
16 years 6 days ago
2009
ACM
An inverse of a schema mapping M is intended to "undo" what M does, thus providing a way to perform "reverse" data exchange. In recent years, three different f...
107
Voted
IS
2007
14 years 11 months ago
2007
Preference queries are relational algebra or SQL queries that contain occurrences of the winnow operator (find the most preferred tuples in a given relation). Such queries are pa...
110
Voted
FOIKS
2008
Springer
15 years 1 months ago
2008
Springer
When decomposing database schemas, it is desirable that a decomposition is lossless and dependency preserving. A well-known and frequently used result for the relational model stat...
103
Voted
VLDB
1994
ACM
15 years 3 months ago
1994
ACM
Physical data independence is touted as a central feature of modern database systems. Both relational and object-oriented systems, however, force users to frame their queries in t...