Tom Johnston

Tom Johnston is the President of Asserted Versioning, LLC, a company which offers bi-temporal data management technology and consulting services. He has a doctorate in Philosophy, with an academic concentration in ontology, logic and semantics. He has spent his entire working career in business IT, in such roles as programmer, systems programmer, analyst, systems designer, data modeler and enterprise data architect. He has designed and implemented systems for numerous clients, in such industries as healthcare, telecommunications, banking, manufacturing, transportation, and retailing.