Information modeling and knowledge bases have become essential subjects in the last three decades, not only in academic communities related to information systems and computer science, but also in the areas of business where information technology is applied.This book presents the proceedings of the 28th International Conference on Information Modelling and Knowledge Bases EJC2018, held in Riga, Latvia from 48 June 2018. The aim of the conference was to bring together experts with a common interest in the understanding and solving of problems on information modelling and knowledge bases, as well as those from different areas of