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Fig. 7. Architecture of proposed compound DSS
5.1.1 Database server
The database server is a computer program that provides database services to other
programs and computers. There are a number of free database servers. The most frequently
used database servers are PostgreSQL, Sybase ASE Express Edition, MS SQL Server Express
Edition, and Oracle Database 10g Express Edition, also known as Oracle XE. The basic
criteria for choosing a database server are the dependence or independence on the platform
(Windows, Unix, Mac OS), support of scripting and programming languages and standards,
and the size and accessibility of the developer's community.
Based on these criteria, Oracle XE was selected as the database server for the proposed DSS.
This solution provides a platform-independent, high quality and reliable database system,
easy administration, and support for PHP, Java, .NET, XML and open source application.
Oracle XE also involves PL/SQL language, a powerful tool for creating, storing and
executing procedures applicable for the analysis and reporting. Due to the fact that Oracle is
the database applications market leader, there is also large developer's community,
providing support via the web discussion forums.
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