Inserting and updating the SQL server with data on a Sharepoint List

Hi everybody,

Please i am presently working on a project that requires me to transfer data from a SharePoint list to the SQL Server, i succeed in using SSIS to do the data transfer but whenever i make any changes on the data on the SharePoint list and try to run the SSIS project, it will add a new row to the SQL Server instead of updating the record. Please i need assistance on this ASAP.

Thanks.