481 search results - page 85 / 97 » acm 1994 |
VLDB
1994
ACM
14 years 21 days ago
1994
ACM
In existing relational database systems, processing of group-by and computation of aggregate functions are always postponed until all joins are performed. In this paper, we presen...
VLDB
1994
ACM
14 years 21 days ago
1994
ACM
In this paper we address the problem of devising a set of indexes for a nested object hierarchy in an object-oriented database to improve the overall system performance. It is not...
VLDB
1994
ACM
14 years 21 days ago
1994
ACM
Advanced technical applications like routing systems or electrical network managementsystems introduce the need for complex manipulations of large size graphs. Efficiently support...
VLDB
1994
ACM
14 years 21 days ago
1994
ACM
The performance of data-parallel algorithms for spatial operations using data-parallel variants of the bucket PMR quadtree, R-tree, and R+-tree spatial data structures is compared...
VLDB
1994
ACM
14 years 21 days 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...