For more information about resources and annotations, see
Java EE 6 Platform Specification (JSR 316):
http://jcp.org/en/jsr/detail?id=316
Java EE Connector Architecture 1.6 specification:
http://jcp.org/en/jsr/detail?id=322
EJB 3.1 specification:
http://jcp.org/en/jsr/detail?id=318
Common Annotations for the Java Platform:
http://www.jcp.org/en/jsr/detail?id=250