This volume constitutes the refereed proceedings of the 17th International Conference on Conceptual Modeling, ER '98, held in Singapore, in November 1998. The 32 revised full papers presented were reviewed and selected from a total of 95 submissions. The book is divided into chapters on conceptual modelling and design, user interface modelling, information retrieval on the Web, semantics and constraints, conceptual modelling tools, quality and reliability metrics, industrial experience in conceptual modelling, object-oriented database management systems, data warehousing, industrial case...

This book constitutes the refereed proceedings of the 31st International Conference on Conceptual Modeling, ER 2012, held in Florence, Italy, in October 2012. The 24 regular papers presented together with 13 short papers, 6 poster papers and 3 keynotes were carefully reviewed and selected from 141 submissions. The papers are organized in topical sections on understandability and cognitive approaches; conceptual modeling for datawarehousing and business intelligence; extraction, discovery and clustering; search and documents; data and process modeling; ontology based approaches; variability...