Semantic triple

This is similar to the classical notation of an entity–attribute–value model within object-oriented design, where this example would be expressed as an entity (sky), an attribute (color) and a value (blue).

A relational database is the classical form for information storage, working with different tables, which consist of rows.

[2] If the knowledge is highly unstructured and dedicated tables aren't flexible enough, semantic triples are used over classic relational storage.

In contrast to a traditional SQL database, an RDF triple storage isn't created with a table editor.

[3] Protégé looks similar to an object-oriented modeling application used for software engineering, but it's focused on natural language information.