# Cypher A declarative query language for graph databases, used to create, read, update, and query nodes and relationships in Neo4j. > [!info]- Canonical definition > This term is maintained in the [[vocab|PKM Vocabulary]] SKOS source, not here. > `pkmv:Cypher` · [term page](https://w3id.org/pkm/vocab/Cypher) · [Turtle](https://w3id.org/pkm/vocab/terms/Cypher.ttl) ## Scope The query language used against the Neo4j graph, as distinct from the database itself (Neo4j) or the API layer (FastAPI). ## Broader - [[Graph Database (Term)|Graph Database]] - [[Tool (Term)|Tool]] — generic (ISO 25964) ## Collections - [[Concept Collection (Collection)|Concept Collection]] - [[Tech Stack (Collection)|Tech Stack]] --- #vocab/term · created 2026-08-28 · modified 2026-08-29