How to define tracking code from web site under GA by using Web SDK or Streaming Data API?

[Luca_Lattarini]

Hello guys,

Anyone can suggest how to define tracking code from web sites under GA by using Web SDK or Streaming Data API?

My goal is to track the traffic flow from different web sites with GA.

Thanks

[ChetanyaJain]

@Luca_Lattarini are these tracking codes for tracking the name/URL of the site or campaign tracking?