In this chapter, we converted an EJB 2.0 entity bean to an EJB 3.0 entity bean using XSLT transformation. We used the built-in JDeveloper XSLT transformation tool for the XSLT transformations. The XSL stylesheets may be modified to convert entity EJBs developed with earlier versions of EJB specifications to entity beans for later versions of the EJB specification. For example, an EJB 2.1 entity may also be converted to an EJB 3.0 entity.