b-frame is a framework for rapid J2EE development. It is based on the assumption that it is possible to create business (i.e. transactional client server) applications just from knowing their structure. It defines sets of XML tags for describing databases and applications operating on these databases (application layer) and template implementations (implementation layer), respectively. It provides XSLT-stylesheets (core layer) for merging the user provided application layer and the template layer into real applications. By default, it comes with a J2EE implementation layer.