we have a requirement to import data into mysql database from cart.

suppose 2 items is available in the cnd if i click into the checkout button then cart item value should be save into the MySQL data. cart items has been modified by the user dynamical so according to my knowledge we can not store data through impex script so any other process to save the user items into the data base. can any one help me regarding this.

cart==>checkout button==>click==>cart item save into the database.