Deletes a single item in a table by primary key. You can perform a conditional delete operation that deletes the
item if it exists, or if it has an expected attribute value.
In addition to deleting an item, you can also return the item's attribute values in the same operation, using the
ReturnValues
parameter.
Unless you specify conditions, the DeleteItem
is an idempotent operation; running it multiple times
on the same item or attribute does not result in an error response.
Conditional deletes are useful for deleting items only if specific conditions are met. If those conditions are
met, DynamoDB performs the delete. Otherwise, the item is not deleted.