You can access and edit existing data sets within an Enterprise Server region using Data File Tools. The procedure to open a data set in the Data File Editor is different from opening a data file, but once opened in the editor, edit it in the same way as you would a data file.
Data sets opened in this way use the ENQ and DEQ locking mechanisms. You are also required to authenticate your request to open a data set if you are connecting to a region that has an external security manager enabled.
Data sets will usually be opened through a Fileshare server running in the region that you connect to. Although, this does not have to be the case if you are opening data sets on a local region, as you can bypass Fileshare and open them directly, which can give faster access. In fact, in this scenario Fileshare does not even need to be configured.
To use a structure file with a data set, the structure file must be stored locally, which means that, unlike when opening local data files, Data File Tools cannot auto-select a structure file of the same name and same location if you are connecting to a remote machine; you must select one each time you open the data set.