ばいちょ(売価調査)、価格比較とネットでのお買い物を楽に

内容説明
This book constitutes the refereed proceedings of the 26th International Conference on Conceptual Modeling， ER 2007， held in Auckland， New Zealand， in November 2007. The 37 revised full papers presented together with 3 keynote lectures were carefully reviewed and selected from 167 submissions. The papers are organized in topical sections on data warehousing and data mining， design methodologies and tools， information and database integration， information modelling concepts and ontologies， integrity constraints， logical foundations of conceptual modelling， patterns and conceptual meta-modelling， requirements elicitation， reuse and reengineering， semi-structured data and XML， as well as Web information systems and XML.