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Farragut Center

1725 I (Eye) Street, N.W. · Washington, DC

How to find us

Farragut Training Facility. Diagonally opposite of the Farragut West Metro Station

Location image of event venue


Semantic Web Technologies have been rapidly maturing and are already being used for serious commercial work. We introduce, demonstrate, and discuss the significance of an emerging W3C recommendation called SHACL ( (SHApes Constraint Language).

Its primary goal is to provide a way to describe and constrain the contents of RDF Graphs. We describe exactly what SHACL is and give some examples from some of our commercial work with clients; we discuss the interacting roles of an enterprise ontology and RDF Shapes and how they work in concert. We demonstrate a prototype tool that integrates the development of Shapes (with an ontology) and show how constraints can be generated from SHACL in the form of ASK queries. SHACL also plays a role as a UI and API aid. This is an important new standard that helps bridge the gap between an enterprise ontology and different enterprise applications that are based on it.

Speakers: Dave McComb and Dan Carey

Dave McComb — Dave is President and co-founder of Semantic Arts, a company that has been specializing in the application of semantics to large enterprises for 15 years. He has designed Enterprise Ontologies and helped move them into applications for over a dozen large enterprises in as many industries. He is the author of Semantics in Business Systems.

Dan Carey — Dan is an ontologist and data architect with 30 years of consulting experience, 25 of it designing databases, data models, and data strategies with major IT service firms. He has worked primarily for government clients at the federal, state, and local levels. Most recently, he has designed semantic technology products in OWL and RDF to assist in military human resources management, and data exchange standards in OWL and XSD. He holds a bachelor's degree in Applied Physics from Georgia Tech.

This meet-up is co-located with Semantic Arts (’ highly acclaimed four-day class, Designing and Building Business Ontologies ( There are a few seats left if you’re interested: