Hi,
SDB Explorer uploads structured data of your database to specified Amazon Simple DB Domain.These domain are just like table with items in rows, attributes in column's header, and values in cells.
If your specified domain does not exist in your account then SDB Explorer will create a domain with specified name automatically before uploading your data or you can create domain at your own before uploading any data into it.
To know more about creating domain- http://www.sdbexplorer.com/documentatio ... pledb.html