Developing Mobile Apps Using DynamoDB - Mastering DynamoDB - page 272

// Specifying the key attributes of the item to be deleted
DynamoDBAttributeValue *value = [[DynamoDBAttributeValue
alloc] initWithN:@"123"];
[deleteItemRequest.key setValue:value forKey:@"productId"];
value = [[DynamoDBAttributeValue alloc]
initWithS:@"productName"];
[deleteItemRequest.key setValue:value forKey:@"recordId"];
// Invoke the request
DynamoDBDeleteItemResponse *deleteItemResponse = [self.ddb
deleteItem:deleteItemRequest];