WWW SQL Designer
Many database features are supported, such as keys, foreign key constraints, comments and indexes. You can either save your design (for further loading & modifications), print it or export as SQL script. It is also possible to retrieve (import) schema from an existing database.
WWW SQL Designer provides the native and continuous support for the CUBRID database.
You can download WWW SQL Designer from http://code.google.com/p/wwwsqldesigner/downloads/list.