If the http://db.kreie.net URL doesn't work, go to this website to access the scripts and other files used in this video series. https://sites.google.com/view/db-krei...
This video shows the SQL commands used to create a schema (account) in Oracle XE and how to create a workspace in APEX that uses that schema.
Scripts for the videos are at: https://sites.google.com/view/db-krei...