Link-uri utile:
http://www.youtube.com/watch?v=JgWQJUsyLVU
http://www.oracle.com/technetwork/developer-tools/apex/documentation/index.html
http://docs.oracle.com/cd/E37097_01/doc/doc.42/e35125.pdf
http://docs.oracle.com/cd/E37097_01/doc/doc.42/e35124.pdf