what is use of additional_data column in sales_flat_quote_item table?

Question

I want to store add custom id (id is primary key of another table ) in sales_flat_quote_item table.

Question. create new column for id or add id in additional_data column ?

which answer is flexible from above ?

Answer 1

Best way is create new field for the id because your use this field anywhere and also convert to sales_flat_order_item table easily.