You can upload your database to Amazon SimpleDB. While uploading you can choose any desired fields as an ID filed and you can add or replace their respective values.
You can export and save your data from Amazon SimpleDB to your native file system.
You can configure and schedule SDB Commander for automation of Export Domain feature of SDB Explorer.
Along with put attribute you can update your item row with add or replace option.
You can easily run your query.
You can search on item-identifier/ item-name
You can sort by attributes or item identifier.
You can view the charges of the last executed query.
You can empty your domain
You can easily fetch your next as well as previous query results.