SHACL

Semantic & Data Protocol

Shapes Constraint Language — W3C standard for describing and validating RDF graphs against sets of conditions (shapes). Provides closed-world validation semantics over RDF data, distinct from OWL's open-world reasoning. Used increasingly in linked-data work where validation-against-expectations is more useful than logical inference. Member of the W3C Semantic Web Suite.

Comunidade

Links

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Detalhes

Licença

Specification only; implementations include Apache Jena SHACL, TopBraid SHACL API (Java), pySHACL (Python), rdf-validate-shacl (JavaScript), Shaclex (Scala)

Status de Dev 🟢 Ativo

Detalhe do Status de Dev

Released / Active (W3C Recommendation; growing adoption in linked-data ecosystems)

Proprietário

W3C; RDF Data Shapes Working Group

País

International (W3C)

Ano de Início 2017

Stack

Specification; reference implementations across multiple languages — Apache Jena (Java), TopBraid SHACL API (Java), pySHACL (Python), rdf-validate-shacl (JavaScript)

Financiamento

W3C standards process

Última Investigação 1 de jul. de 2026

Domínios de Caso de Uso

Co-Creation & Knowledge

Semantic & Data Protocol Atributos

Origins

RDF validation (created to fill the validation gap left by OWL's open-world reasoning; influenced by ShEx and SPIN)

Database

Operates over RDF data in triple stores or in-memory graphs

Query Language

SHACL itself is partly a query mechanism via SPARQL-based constraints (SHACL Advanced Features); SPARQL remains the primary RDF query language

Data Formats

Turtle, JSON-LD, RDF/XML (any RDF serialization) for both shapes and data

Collaborative Live Editing

N/A (validation specification)

Rich Text Editing

N/A

Mobile Support

Library-level

Web Support

Yes (rdf-validate-shacl runs in browsers; JSON-LD shapes serializable for web use)

Native Apps

TopBraid Composer and other RDF editors support SHACL

Terms

Open standard — W3C Recommendation

Funds

N/A

Based On

Earlier RDF validation languages (ShEx, SPIN); RDF data model; SPARQL for advanced constraints; influenced by structured-data validation patterns from other ecosystems

Semantic Web Compatibility

Native — SHACL operates over RDF and is part of the W3C Semantic Web Suite

Protocol Maturity / Standardization

W3C Recommendation (2017; SHACL Core + SHACL-SPARQL extension); SHACL 1.2 in active working group development; mature and growing in adoption

Vocabulary / Ontology Type

Validation vocabulary — provides constructs for defining shapes (NodeShape, PropertyShape) with constraints (min/max cardinality, datatype, value ranges, pattern matching, etc.) over RDF graphs

Usage Pattern

Linked data validation; data quality enforcement; form generation from shapes; API request/response validation; Solid Pod data validation; FAIR data practices; widely used in Wikidata, biomedical data, and W3C VC ecosystems