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Technologies

Operating System

• NixOS

Data Management System

• Small distributed relational databases: PostgreSQL + PostGIS
• Mapping of relational data to RDF:
  • 2 W3C recommandations from the RDB2RDF Working Group:
    1. Direct Mapping: RDB to RDF Mapping
    2. R2RML: RDB to RDF Mapping Language
  • [RDB2RDF implementations]:

| Name | Language | Mapping language | Licence | Last update | Comment | | --- | --- | --- | --- | --- | | D2RQ | Java | D2RQ mapping language | Free | 22.06.2012 | | OpenLink Virtuoso RDF Views | C | Virtuoso Meta Schema Language | Free | 15.08.2018 | Mapping to external database only available in commercial version | R2RML Parser | Java | R2RML | Free | 11.02.2016 | | Ontop | Java | R2RML | Free| 06.03.2018 | Exist as a Protégé plugin | | rdb2rdf | Python | Direct mapping | Free | 24.11.2014 | | R2D2 | PHP | D2RQ mapping language | Free | 01.10.2006 | | RDF4J aka Sesame + [R2RML API] | Java | R2RML | Free | 11.08.2018 |

• RDF triplestore and SPARQL endpoint:
  • OpenLink Virtuoso triplestore (C)

See also:

• What are the pros and cons of RDB2RDF tools? on Stack Overflow
• converter2rdf on the W3C wiki
• Graph DataBase on Wikipedia

Web Server

• Apache HTTP Server
• NGINX

Back end

• Python framework (Django)
• Server-side JavaScript framework (NodeJS + MongoDB)
• PHP framework (Symfony or CakePHP)
• Java framework (Java Server Faces)

Front end

• HTML5
• CSS3 framework (Bulma) + CSS preprocessor (SASS/LESS)
• JavaScript + jQuery
• Slippy Map (OpenLayers3)
• Dynamic tables (Datatables)
• Datepicker (jQuery UI)
• Iconset (FontAwesome)

Dataviz

• D3 for sets, graphs and tree structures
• ElasticSearch + Kibana
• Jupyter

Continuous Integration

• Build automation tools
  • Apache Maven
  • Apache Ant
  • Gradle
  • Bower
• CI Server
  • Jenkins
  • Travis
  • Buildbot
  • Strider
  • Gitlab CI
  • TeamCity