Note that SimpleDB has an implicit key called ItemName, which in this case would be the to-do item as a string, like so.

注意SimpleDB有一个名为itemname的隐含键，在本例中为字符串形式的备忘事项，如下所示？

youdao

Note that SimpleDB has an implicit key called ItemName, which in this case would be the to-do item as a string, like so.

注意SimpleDB有一个名为itemname的隐含键，在本例中为字符串形式的备忘事项，如下所示？

youdao