Johann Wolfgang Goethe Universitaet

easy RDF Query Language (eRQL)

Introduction

eRQL Easy RDF Query Language (eRQL) is an intuitive easy to use query language. In its first implementation it was based upon RQL. Even without knowing the underlying schema the user can query RDF data while the syntax for it is mainly intuitive.

The current implementation for eRQL and its new features are based on and included to the current implementation of our RDF-Source Storage System (RDF-S3). The description and download for this version can be found under the page of RDF-S3.

The original eRQL prototype implementation for an eRQL processor called eRQLEngine comes with a simple graphical user interface. The eRQLEngine was tested with a partial RQL processor called RQLEngine that runs upon VRP and implements the needed features for the eRQLEngine. The eRQL prototype implementation is open source freeware and can be downloaded as a bundel from the eRqlEnine page.

The main design goals for eRQL had been:

Please click this link for a more detailed documentation on eRQL.

Translations

A German Web page for eRQL can be visited at: http://www.wleklinski.de/rdf/

The complete Master's Theses (available in german only) in PDF format:

Downloads

The current implementation for eRQL and its new features are based on and included to the current implementation of our RDF-Source Storage System (RDF-S3). The description and download for this version can be found under the page of RDF-S3.

The original prototype implementation for eRQL called eRqlEngine is available. It is based upon a partial RQL processor called RqlEngine. At the moment only an interface to the ICS-FORTH Validating RDF Parser (VRP v2.5) is implemented for the RqlEngine. The eRQL prototype implementation is open source freeware and can be downloaded as a bundel from the eRqlEnine page.

Credits

eRQL was designed during the Master's Thesis of Fabian Wleklinski.

Contact

For feedback and questions please contact:

Karsten Tolle  tolle@dbis.informatik.uni-frankfurt.de
or
Fabian Wleklinski  Fabian@Wleklinski.de


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