List of terms and definitions for these terms used in the documentation.

Class

RDF Schema uses the notion of class to specify categories that can be used to classify resources.

Graphs box

The Graphs box is displayed on the upper left side of the Explore module and shows all graphs available

Navigation box

The Navigation box is displayed on the left side in the Explore module when you select a graph in the Graph box. It shows the structure of a graph with classes and subclasses.

Object

Element of an RDF triple which is related by a property with a subject.

Object mapping

A mapping rule that transforms a data element in a source dataset to a data element in a target dataset. If the target dataset is an RDF graph, object mappings result in triples with Resource objects and are thus suitable to map Object properties. Object mappings create a new subordinate level in the hierarchical mapping view.

Predicate

Element of an RDF triple representing the relationship between subject and object. The relationship is phrased in a directional way (from subject to object) and is called a property.

Property

Element of an RDF triple representing the relationship between subject and object. See also Predicate.

RDF

Abbreviation for Resource Description Framework. A family of specifications of the World Wide Web Consortium (W3C) to describe resources. See also RDF 1.1 Primer.

Resource

Resources can be anything, including documents, people, physical objects, and abstract concepts. In RDF resources are identified by URIs.

SPARQL

Query language for RDF graphs.

Subject

Element of an RDF triple about which a statement is made.

Triple

RDF statement consisting of subject-predicate-object.

URI

Uniform Resource Identifier. A string of characters used to identify a name of a resource.

URI pattern

A template that specifies how object URIs are created. It consists of static strings, usually defining URI scheme, authority and some paths, as well as references to source paths, which are replaced with source dataset data values during transformation.

Value mapping

A mapping rule that transforms a data element value (like a string, number or data) in a source dataset to a data element value in a target dataset. If the target dataset is an RDF graph, value mappings result in triples with Literal objects and are thus suitable to map Datatype properties.

Value path

A path expression that selects the value of the data element in a source dataset specified by that path.

Vocabulary

A particular RDF dataset that is used to describe data for a specific domain.

VoID Statistics

Vocabulary of Interlinked Datasets (VoID). An RDF Schema vocabulary for expressing metadata about RDF datasets.

Workspace

A workspace is an endpoint of a specific eccenca DataPlatform identified by a workspace name and the DataPlatform URL. The specific configuration of eccenca DataManager defines which options are available here, i. e. whether the user can choose between several workspaces, access only a default workspace or is allowed to create workspaces.