The major relational database systems have been providing XML support for several years, predominantly by mapping XML to existing concepts such as LOBs or (object-)relational tables. The limitations of these approaches are well known in research and industry. Thus, a forthcoming version of DB2 Universal Database® is enhanced with comprehensive native XML… (More)
This paper describes the overall architecture and design aspects of a hybrid relational and XML database system called System RX. We believe that such a system is fundamental in the evolution of enterprise data management solutions: XML and relational data will co-exist and complement each other in enterprise solutions. Furthermore, a successful XML… (More)
Comprehensive and efficient support for XML data management is a rapidly increasing requirement for database systems. To address this requirement, DB2 Universal Databasee (UDB) now combines relational data management with native XML support. This makes DB2t a truly hybrid database management system with first-class support for both XML and relational data… (More)
DB2 provides native XML storage, indexing, navigation and query processing through both SQL/XML and XQuery using the XML data type introduced by SQL/XML. In this tutorial we focus on DB2's XML support for schema evolution, especially DB2's schema repository and document-level validation.
Relational queries on continuous streams of data are the subject of many recent database research projects. In 1998 a small group of people started a similar project with the goal to transform our product, NonStop SQL/MX, into an active RDBMS. This project tried to integrate functionality of transactional queuing systems with relational tables and with SQL,… (More)
The Propel Distributed Services Platform (PDSP) is the core software product of Propel, a new Internet infrastructure software company. The PDSP product was created to enable Java developers to architect, implement, deploy, and maintain Internet applications and services much more quickly and easily than before while still providing all of the RAS… (More)