This central database has long been ingrained into the culture of Frontier programming, but has also been one of the biggest points of confusion for beginners. That is, it now has the ability to work information that is stored in individual files that are Frontier specific. Simple, and window based objects.
Simple data are values like numbers and strings.
These are visible and editable directly in the ODB view. Window based objects however are opened into their own window for editing. It is the window based object types that can be stored in their own file. When data is in its own file, the data referred to a file based object. For example you may have an outline that lives in a file instead of the ODB and you might say this is a file based object or a file based outline.