Reading files after packaging?

I’ve been looking into data driven development, using things like xml and excel spreadsheets to inform game elements. Is it possible to read these type of files after the game has been packaged? Or would it need to be repackaged any time an edit was made?

For example, if there’s an xml file that goes with the game after it’s been packaged. With elements like the health of every enemy or the text values of HUD elements, could I have a system where editing this file would reflect the changes in game without having to recompile and package?

DataTables are the engine’s version of that system. However, they are imported into the engine, so they aren’t a live updating system for that. You can use config variables and INI entries, but end users can change things