Spotfire can store data in library but this data cannot be modified directly. In many cases user needs to create simple master data or mapping tables which are stored on local drives in excel or other formats. This has many drawbacks. Users can upload data to library but should also be able to modify this data later (similar as edit rows in SQL) with some simple features like preview data, duplicate rows, delete rows, sorting, freezing panes , PK and similar. User should be able to use this data in information designer or data connections in joins.