Q&A FROM OUR RECENT WEBINAR, “An Overview of SHACL (Shapes Constraint Language)”

Posted by Kristi Lee-John on September 13, 2017

We received quite a few questions during our recent webinar, An Overview of SHACL (Shapes Constraint Language). The webinar focused on SHACL features and capabilities and the rationale behind SHACL's design and recommend best practices for using SHACL. Questions about … Read More »

The “Governance of Data Governance”

Posted by ralph hodgson on August 25, 2017

Governance of data is not only about managing metadata of enterprise data assets, its also about setting up a “Governance Framework” that defines business areas, data subject areas, organizations, roles and responsibilities. In this post we provide an overview of … Read More »

Beyond Good Data –Business Decisions Require Meaningful Data

Posted by Robert Coyne on August 21, 2017

We all strive to make good business decisions, but with the continuous improvements in technology and data storage it can often be difficult to sift through all of the available data. Much of it may be good data—in other words, … Read More »

GDPR was a hot topic at DGIQ 2017

Posted by Irene Polikoff on July 3, 2017

For several years TopQuadrant has been a sponsor at the DGIQ Conference in San Diego. This year the conference was bigger than ever! From our own experience, we know that this reflects the continuing fast growth in the use of … Read More »

How to define constraints on rdf:Lists using SHACL

Posted by Holger Knublauch on June 13, 2017

RDF lists are a rather weak spot of the semantic technology stack. Their design is basically a linked structure of intermediate list nodes using dedicated properties rdf:rest and rdf:first. So a simple list of string literals “red”, “yellow” and “green” … Read More »

How to use TopBraid as a data validation server

Posted by Holger Knublauch on June 13, 2017

RDF data validation is the process of checking a (data) graph against constraints from a schema definition. In the Shapes Constraint Language (SHACL), constraints are themselves expressed in a RDF syntax, in so-called shapes graphs. SHACL-based validation engines can (among … Read More »

An Overview of SHACL Features and Specifications

Posted by Holger Knublauch on June 12, 2017

After two and half years of collaboration and discussions, the W3C Data Shapes Working Group has produced a collection of specifications that define the features of the Shapes Constraint Language (SHACL): SHACL (Official W3C Standard Recommendation) is the main document, … Read More »