Authority files
Authority files mean controlled vocabularies like the Gemeinsame Normadatei (GND), Getty Thesaurus of Geografic Names (TGN) or VIAF (Virtual International Authority File). See also the submenu: authority files

The CIDOC Conceptual Reference Model (CRM) provides definitions and a formal structure for describing the implicit and explicit concepts and relationships used in cultural heritage documentation. Since 9/12/2006 it is official standard ISO 21127:2006. See

Content Management System (CMS)
A content management system is a computer application that supports the creation and modification of digital content. It is often used to support multiple users working in a collaborative environment. Drupal for example is a free content management software.

Erlangen CRM
The Erlangen CRM / OWL is an interpretation of the CIDOC CRM in a logical framework attempting to be as close as possible to the text of the specification. See

CIDOC CRM oder LIDO von ICOM empfohlen

Linked Data
Linked data is about using the web to connect related data that wasn't previously linked, or using the web to lower the barriers to linking data currently linked using other methods. More specifically, Wikipedia defines Linked Data as "a term used to describe a recommended best practice for exposing, sharing, and connecting pieces of data, information, and knowledge on the Semantic Web using URIs and RDF." (Source:

Allows you to define contextual relationships behind a defined vocabulary. It is the cornerstone of defining a knowledge domain. A formal syntax for defining ontologies is OWL (Web Ontology Language) which is an extension to RDFS (RDF Schema).

Open source


Stands for Resource Description Framework. It is one of the key ingredients of Linked Data, and the basis for the semantic web. It provides a generic graph-based data model for describing things, including their relationships with other things. But note: RDF, whilst the foundation of defining data structures for the semantic web, does not in itself describe the semantics, or meaning, behind the data - it is the framework. It is the ontology instead that describes the content.
RDF identifies resources using URIs (Universal Resource Identifiers)

--> OWL und RDFS

Semantic web
The semantic web is a way of linking data between systems or entities that allows for rich, self-describing interrelations of data available across the globe on the web.

The semantic web is a giant, global data graph defined in RDF (Resource Description Framework).




Triple Store
A triple store is a database for storing and retrieving subject–predicate–object expressions.

A collection of terms given a well-defined meaning that is consistent across contexts.


The explanations are taken from the websites mentioned in the text above or listed here below. Consult them for a closer look to specific topics.