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Re: [dxwg] Defining validation

From: kcoyle via GitHub <sysbot+gh@w3.org>
Date: Tue, 09 Oct 2018 07:18:18 +0000
To: public-dxwg-wg@w3.org
Message-ID: <issue_comment.created-428086610-1539069497-sysbot+gh@w3.org>
Thanks, @nicholascar . That brings up another question for me: do we talk about validation (the act of validating) or do we talk about constraints (the definition of rules), or both? They are different, but sometimes are realized in a single code - that is, a SHACL document defines constraints but it also can be used to implement the act validation (checking the instance data against the defined constraints and returning the results). In a sense SHACL can be seen as both documentation and implementation although you could argue that the latter function is its primary function. The DCAT-AP PDF document defines constraints that are the re-defined in the SHACL file. The latter can be used as implementation of validation, the former is only documentation.

(The use of OWL "constraints" complicates things, as open world OWL makes use of those constraints quite differently from SHACL or ShEx.)

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