514 search results - page 13 / 103 » Foundations of Aggregation Constraints |
PODS
2010
ACM
14 years 1 months ago
2010
ACM
This paper approaches the incremental view maintenance problem from an algebraic perspective. We construct a ring of databases and use it as the foundation of the design of a quer...
IS
2002
13 years 7 months ago
2002
In this paper, we explore the possibility of transforming queries with minimum and maximum predicates into equivalent queries that can be computed more efficiently. The main contr...
ICDCS
2006
IEEE
2006
IEEE
Scalable and Robust Aggregation Techniques for Extracting Statistical Information in Sensor Networks
14 years 2 months ago
Wireless sensor networks have stringent constraints on system resources and data aggregation techniques are critically important. However, accurate data aggregation is difficult ...
SIGMOD
1999
ACM
14 years 14 days ago
1999
ACM
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
VLDB
1987
ACM
13 years 11 months ago
1987
ACM
is at least ae powerful as SQL. Two well known relational query languages that have a sound theoretical foundation are relational algebra and relational calculus. As SQL is more cl...