In repository mode, List & Label does not save and load the files used in a report on its own. Instead of file paths and names, unique repository IDs are used. You will need to implement the IRepository interface yourself and pass it to the ListLabel object. From this point onwards, List & Label will query your user-defined repository for the file content belonging to a repository ID, or transmit the ID along with the corresponding file content to the repository to be saved. Whether the files in the repository are managed by an SQL database, a web service, or some other storage solution depends entirely on your IRepository implementation. In this case, loading and saving of entries in the repository takes place exclusively via streams.
The following schematic diagram shows how a report with the ID "123" is loaded via an IRepository implementation managing an internal SQL database: