Thanks a lot for your answers so far. What I was thinking of as a use case are many small xml-Documents in many different (sub)directories that should be used together as one database, like for example one xml file for one address and address arranged into folders according to towns so one would have 9 xml files in a folder named "berlin" and 5 ones in another folder named "munich" and so on. Does BaseX create an index of these files so that I could for example query for example for persons with the same name? If I want to change something in these files, will the changes be also made in the xml documents?
Kind regards, Julia