Materiales
https://docs.oracle.com/en/database/oracle/application-express/19.2/aetut/about-application-express.html#GUID-8AE8C399-E8A1-47E1-9ADA-F9736196495E
https://www.oracle.com/technetwork/developer-tools/apex/learnmore/apex-curriculum-4490003.html
https://www.oracle.com/database/technologies/appdev/apex.html