DynamoDB – Best Practices - DynamoDB Applied Design Patterns - page 216

[request.itemsetValue:valueforKey:@"BookId"];
value = [[DynamoDBAttributeValuealloc]
initWithS:@"FavoriteBooks"];
[request.itemsetValue:valueforKey:@"RecordId"];
value = [DynamoDBAttributeValue new];
[valueaddSS:@"Computer"];
[valueaddSS:@"Science"];
[valueaddSS:@"Physics"];
[request.itemsetValue:valueforKey:@"Data"];
// process the request
DynamoDBPutItemResponse *response =
[self.ddbputItem:request];