component view->right click->data moduler->new->database->
select the new database then
right click->open specification->
set the database type is oracle->logical view->data moduler->new->schema->
right cilick the new schema->open specification->
set the schema's database is your created in component view->
then
you can create your database objects,finally right click your schema->
data moduler->forward engneer->in the window you can export your ddl
