Insert/Update

Hi,

I am working on a package to insert and update contacts from a database into an application. To insert into application I am using script component.
So my question is can I do both insert and update script seperately in two different script components of same package.

My package looks something like this.

Can we push new inserts into one script component and updates to other script component?

Does both the script components execute at the same time?Will there be any conflicts between insert and update in the application?

Thanks for any help.