Allocating relations in a distributed database system

A Reinforcement Learning Solution for Allocating Replicated Fragments in a Distributed Database

Due to the complexity of the data distribution problem in Distributed Database Systems, most of the proposed solutions divide the design process into two parts: the fragmentation and the allocation of fragments to the locations in the network. Here we consider the allocation problem with the possibility to replicate fragments, minimizing the total cost, which is in general NP-complete, and prop...

Optimal Clustering of Relations in a Database System

The placement of records can signiicantly aaect the performance of query processing in a database system. By making use of the query patterns and their frequencies, we can design multi-attribute hash indexes to optimally cluster records. In this paper, we rst describe algorithms for relational operations which exploit this type of clustering and the costs involved. We then present various optim...

SMOOTH - A Distributed Multimedia Database System

A multimedia database system deals with the storage, manipulation and retrieval of digitally representable information objects such as text, images, video and audio [1]. Providing mechanisms that allows the user to retrieve desired multimedia information by their semantic content is now an important issue in multimedia database systems. However, current products (e.g., Oracle 9i interMedia and ...

Disima: a Distributed Image Database Management System

Multiware Database: A Distributed Object Database System for Multimedia Support

This paper describes the Multiware Database, a database capable to store and manage complex multimedia documents using the features of both object database management systems and open distributed systems. This multimedia database is a component of the Multiware project, a platform supporting distributed multimedia cooperative applications. Representation of multimedia documents in this system i...