140 search results - page 1 / 28 » Redundant Relations in Relational Databases: A Model Theoret... |
JUCS
2010
12 years 11 months ago
2010
: We initiate in this work the study of a sort of redundancy problem revealed by what we call redundant relations. Roughly, we define a redundant relation in a database instance (d...
ICDE
2006
IEEE
13 years 10 months ago
2006
IEEE
Due to the flexible structures of SQL, no general approach works efficiently for all kinds of queries. Some special kinds of queries can be further optimized for better performa...
FOCS
2008
IEEE
13 years 10 months ago
2008
IEEE
Relational joins are at the core of relational algebra, which in turn is the core of the standard database query language SQL. As their evaluation is expensive and very often domi...
ACSC
2007
IEEE
13 years 10 months ago
2007
IEEE
A common approach in designing relational databases is to start with a universal relation schema, which is then decomposed into multiple subschemas. A good choice of subschemas ca...
WISE
2002
Springer
13 years 9 months ago
2002
Springer
We propose to use object-relational database management systems to store and manage semi-structured data. ORA-SS (Object-Relationship-Attribute model for Semi-Structured data) [9]...