In QuintaDB you can enable option 'Access to only own records' in order to restrict user to see only entered or imported by him data. Later you can filter all records by 'Added by' and save result to Report.
On the 'Records' page there is 'Added by' filter, using which you can filter records by user who added it. You can always save the result in Report.
If you want to restrict your User's group to access users only their own records you need to enable 'Access to only own records' option.
This way users will only see their own records, which were submitted or imported to your table.