Oracle Application Express includes two types of packaged applications:
Sample applications
Productivity applications
Both sample and productivity applications are fully functional applications that have been designed to address a specific business need. You can install, run, and use packaged applications as is, or analyze them to better understand how to use Application Builder to build specific types of functionality.
The main difference between a sample and productivity application is the level of support. By default, sample applications are fully editable. In contrast, you must unlock productivity applications before you can edit them. Unlocking a productivity application makes it ineligible for future upgrades or support by Oracle Support.