I'm new to ruby and need some guidance with a task. I have to import data from an excel spreadsheet. That currently works fine. Now I need to add new columns to the spreadsheet and those new columns belong to seperate tables in the database. So, first I need to look-up the foreign key of the value from excel and add it to that respective table. In total when the spreadsheet is imported I am dealing with three tables. How do I go about doing that? Thank you in advance for any guidance, help or examples.