В данной работе мы рассмотрели различные методы организации физического
уровня СУБД: вертикальное и горизонтальное фрагментирование, а также вкратце …

An efficient way to improve the performance of database systems is the distributed
processing. Therefore, the functionality of any distributed database system is highly …

The rapid advancement of network technology has changed the way the world operates and
has produced a large number of network application services for users. In order to provide …

In the literature of distributed database system (DDBS), several methods sought to meet the
satisfactory reduction on transmission cost (TC) and were seen substantially effective. Data …

An efficient way to improve the performance of database systems is the distributed
processing. Therefore, the functionality of any distributed database system is highly …

The performance and efficiency of the distributed database system (DDBS) design are
dependent on proper data fragmentation, reallocation, and replication of global relations. In …

In this article, we introduce a replication procedure in a distributed database system that
supports several fragmentations of the same data table. One application that requires …

Information technology systems deployed by enterprises should not only fulfil their business
functionalities but also cater to Quality of Service concerns such as Availability, Scalability …

The main purpose of this paper is to show the advantage of using a model proposed by us,
which minimizes roundtrip response time versus traditional models that minimize query …

The developments in database and networking technologies and demand for increasing
database sizes make distributed database systems (DDS) more important in modern society …