Hi @Rami ALZEBAK​ , you can use DESCRIBE HISTORY table_name command to get the history of the table. All the updates that you make to the table are versioned and stored in the form of parquet files. By default, table history is retained up to 30 days. And as far as I know, there is no cost implication associated with preserving history. Also the performance is also based on the complexity of your code but is not related to the versioning. Hope it helps!