Using the oracle database as a declarative RSS hub

The interaction with the Web has historically evolved from static bookmarks to dynamic searches to the current usage of active notification mechanisms based on popular protocols like RSS or Atom. In the same time a large volume of important source data is still contained in relational databases. The talk will analyze the way the Oracle database participates to the activation of the data and opening the state changes in a standard and secure way for easy integrating with the rest of the push based Web protocols. We will study the declarative specification of RSS feeds generated based on the state changes detected in the data stored in the Oracle database. On the opposite, external RSS feeds can be injected to the database and processed declaratively in conjunction with the rest of the data. Most of the technical pieces required for such a solution are already supported by the database engine (e.g. declarative XML processing, state change notifications, queues, crawlers, continuous queries), effectively turning the database into a declarative XML hub. The advantages of using database solutions for such problems in an enterprise context are security, scalability and reliability.