29 search results - page 1 / 6 » An Algebraic Approach to Bi-directional Updating |
IDEAS
2009
IEEE
14 years 1 days ago
2009
IEEE
This paper is concerned with a transformation-based approach to update propagation in an extended version of Codd’s relational algebra which allows for defining derived relatio...
APLAS
2004
ACM
13 years 10 months ago
2004
ACM
In many occasions would one encounter the task of maintaining the consistency of two pieces of structured data that are related by some transform — synchronising bookmarks in di...
TOMS
2008
13 years 4 months ago
2008
We show how to compute an LU factorization of a matrix when the factors of a leading principle submatrix are already known. The approach incorporates pivoting akin to partial pivo...
DOOD
1997
Springer
13 years 9 months ago
1997
Springer
Abstract. This work discusses the CROQUE approach to the maintenance problem for materialized views. In a CROQUE database, application-speci ed collections (type extents or classes...
SIGMOD
2008
ACM
14 years 5 months ago
2008
ACM
The emergence of database languages with side effects, notably for XML, raises significant challenges for database compilers and optimizers. In this paper, we extend an algebra fo...