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A software to publish Relational Databases in RDF format
This software facilitate and automate publishing, in the Semantic Web, linked open data obtained from relational database (RDB), through the integration between the D2RQ tools used in this process. It also offers a new tool that allows the semi-automatic customization of the generated mapping file in order to incorporate a domain ontology supplied by the user.
...A major feature of this full-fledged tool is the ability to produce structured ontologies with deeper hierarchies by exploiting both the database schema and the stored data.
RDBToOnto can be exploited to produce RDF Linked Data.
It can also be used to generate highly accurate RDB-to-RDF mapping rules (for D2RQ Server and Triplify).
This library facilitates a creation and management of OWL 2 ontology that describes a web service as defined in WSDL Version 2.0: RDF Mapping W3C specification. While the specification is based OWL 1.1 version, the library uses "The OWL API" which is OWL 2 based.
The “RDB2RDF Mapper” is a Java based software desktop application which allows a user to create a mapping file between a relational database and an RDFS/OWL ontology via a graphical user interface. This project is ANDS-funded.
Spreadsheet-to-RDF wrapper capable of transforming spreadsheets to arbitrary RDF graphs; supports mapping language with powerful formula expressions as you know from Excel, local/remote Excel/ODF/CSV, SPARQL service - source available at https://github.com/theandyl/xlwrap
That project aims at providing a clean service API, and the corresponding C++ implementation, for freely available geographical-based services on the Internet (e.g., GeoIP service by the GPL-based software77 database, Yahoo! GeoPlanet, etc.).
SPARQL to Object Oriented eNgine allows users to expose their traditional data sources (RDBMS, OODBMS, XML, LDAP, ecc) as RDF data, through a SPARQL endpoint.