Useful Sites or Somthing like that ( Web )

Various IT fields (Java, DB, OS, Moblie etc.) _
http://iceup.org


Developer Data Modeler_
http://www.oracle.com/technetwork/developer-tools/datamodeler/overview/index.html

Step by step Spring MVC web app _
http://static.springsource.org/docs/Spring-MVC-step-by-step/
(한글 번역 사이트 ) http://blog.naver.com/PostList.nhn?blogId=hornban

OLC ( Open source software Learning Community )
http://olc.oss.kr/main.jsp