Named Graphs

A named graph is a concept in the Semantic Web architecture where a set of Resource Description Framework (RDF) statements (a graph) are identified using an internationalized resource identifier (IRI). This allows for descriptions to be made about that set of statements, such as context, provenance information, or other metadata.

In an RDF database, a named graph is essentially a subset of data that has been given a unique label (referred to as a name). A graph database can contain multiple named graphs alongside its default graph, and each fact can be present in or absent from any graph. Named graphs form a patrician of information that can be used.

Named graphs are useful for managing sets of RDF data within an RDF store, enabling fine-grained access control, and managing chains of provenance for pieces of data.

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