Terminology that is linked to portions of SPARQL 1.1 Query Language is used in SHACL as defined there. Terminology that is linked to portions of RDF 1.1 Concepts and Abstract Syntax is used in SHACL as defined there. Throughout this document, the following terminology is used. This section introduces SHACL with an overview of the key terminology and an example to illustrate basic concepts. This document specifies SHACL (Shapes Constraint Language), a language for describing and validating RDF graphs. The reader should be familiar with basic RDF concepts such as triples and, for the advanced concepts of SHACL, with SPARQL The examples in this document use Turtle and (in one instance) JSON-LD. These advanced features are SPARQL-based constraints and constraint The sections 5 and 6 are about the features that SHACL-SPARQL has in addition to the Core language. The sections 2 - 4 cover the SHACL Core language and may be read independently from the later sections. The introduction includes a Terminology section. Pre-binding of Variables in SPARQL Queries 6.3 Validation with SPARQL-based Constraint Components.6.2.2 Label Templates (sh:labelTemplate).6.2.1 Parameter Declarations (sh:parameter).6.2 Syntax of SPARQL-based Constraint Components.6.1 An Example SPARQL-based Constraint Component.5.3.2 Mapping of Solution Bindings to Result Properties.5.3.1 Pre-bound Variables in SPARQL Constraints ($this, $shapesGraph, $currentShape).5.3 Validation with SPARQL-based Constraints.5.2.1 Prefix Declarations for SPARQL Queries.4.7.3 sh:qualifiedValueShape, sh:qualifiedMinCount, sh:qualifiedMaxCount.4.5 Property Pair Constraint Components.3.6.2.5 Constraint Component (sh:sourceConstraintComponent).3.6.2 Validation Result (sh:ValidationResult).3.6.1.3 Syntax Checking of Shapes Graph (sh:shapesGraphWellFormed). 3.6.1 Validation Report (sh:ValidationReport).3.4.2 Handling of Ill-formed Shapes Graphs.3.3 Linking to shapes graphs (sh:shapesGraph).2.3.2 Non-Validating Property Shape Characteristics.2.1.4 Declaring the Severity of a Shape.2.1.3.5 Objects-of targets (sh:targetObjectsOf).2.1.3.4 Subjects-of targets (sh:targetSubjectsOf).2.1.3.2 Class-based Targets (sh:targetClass).2.1.1 Constraints, Parameters and Constraint Components. 1.6 Relationship between SHACL and SPARQL.1.5 Relationship between SHACL and RDFS inferencing.This document is governed by the 1 March 2017 W3C Process Document. An individual who has actual knowledge of a patent which the individual believes containsĬlaim(s) must disclose the information in accordance with W3C maintains a public list of any patentĭisclosures made in connection with the deliverables of the group that page also includes instructions for disclosing a patent. This document was produced by a group operating under the This enhances the functionality and interoperability of the Web. Is to draw attention to the specification and to promote its widespread deployment. It is a stable document and may be used as reference material or cited from another document. This document has been reviewed by W3C Members, by software developers, and by other W3C groups and interested parties, and is endorsed by the DirectorĪs a W3C Recommendation. Please see the Working Group's implementation Comments regarding this document are welcome. This document was published by the RDF Data Shapes Working Group as a Recommendation. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at. Other documents may supersede this document. This section describes the status of this document at the time of its publication. Such descriptions may be used for a variety of purposes beside validation, including user interface building, code generation and data integration. As SHACL shape graphs are used to validate that data graphs satisfy a set of conditions they can alsoīe viewed as a description of the data graphs that do satisfy these conditions. In this manner are called "shapes graphs" in SHACL and the RDF graphs that are validated against a shapes graph are called "data graphs". These conditions are provided as shapes and other constructs expressed in the form of an RDF graph. This document defines the SHACL Shapes Constraint Language, a language for validating RDF graphs against a set of conditions. Please check the errata for any errors or issues reported since publication. Dimitris Kontokostas, University of Leipzig Repository: Shapes Constraint Language (SHACL) W3C Recommendation 20 July 2017 This version: Latest published version: Latest editor's draft: Implementation report: Previous version: Editors: Holger Knublauch, TopQuadrant, Inc.
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