This is the Linux app named Raquel Database System whose latest release can be downloaded as RaquelTeachingTool-0.1.39.tar.gz. It can be run online in the free hosting provider OnWorks for workstations.
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SCREENSHOTS:
Raquel Database System
DESCRIPTION:
The project has 2 related sets of aims.
As a language, RAQUEL is to :
1. be a pure relational algebra language (unlike SQL) as defined by Date & Darwen's "The Third Manifesto";
2. incorporate a generalised extension of the ANSI-SPARC 3-layer DB architecture;
3. have the maximum ratio of functionality to conceptual complexity (as defined by Fred Brooks).
As a DBMS, RAQUEL is to :
1. have an Open Architecture, enabling a variety of DBMS configurations of 'black box' code, each installation optimised for a certain kind of DB;
2. be a stack of core black boxes to provide general DBMS functionality, plus a range of plug-in black boxes to support different physical storage mechanisms & scalar data types;
3. employ code designed with a mixture of functional, OO & other methods so as to minimise internal DBMS state complexity.
The 'Northumbria Website' (above RHS menu option) describes the vision, specification & design of the RAQUEL language & DBMS architecture.
Audience
Developers
Programming Language
C++, C
Categories
This is an application that can also be fetched from https://sourceforge.net/projects/raqueldbsystem/. It has been hosted in OnWorks in order to be run online in an easiest way from one of our free Operative Systems.