After you prepare your development view, you can start the rebase operation.
By default, in a multiple-stream project, you rebase your development stream either to baselines recommended by the parent stream or to baselines created by the parent. Typically, these recommended baselines are created by other streams in the project. You rebase your work area to stay up-to-date with other developers' work.
In a single-stream project, an integrator rebases the integration stream to identify a major project milestone.