Access Control of XML Documents and Business Rule Processing for Advanced Information Exchange

In this paper, we summarize our research results obtained through the COE program. Our topics are classified into two categories. One is access control of XML documents, and the other is business rule processing for e-commerce. The former is dealing with various aspects of regulating access to XML documents, so that unauthorized access to data can be prevented. The latter is dealing with formal treatment of business rules for advanced automated e-commerce systems. We studied modeling and querying business rules, and extracting business rules from Web pages. We also describe two topics in more detail, one is relevancy-based access control of XML documents, and the other is extracting global policies for efficient access control of XML documents