About your parent stream
When you join a multiple-stream project, you specify from which stream you will be working. Typically, you join a project at its integration stream. If your project uses feature-specific development streams, you can join the project at the level of the parent development stream rather than at the integration stream.
The stream at which you join the project becomes the parent stream to your development stream and serves as your shared work area. Therefore, if you join the project at its integration stream, the project integration stream becomes your shared work area.
The integration view that you use is attached to the parent stream. Therefore, the integration view shows the baseline for the parent stream and all delivered activities in that stream.
The parent and child relationship defines the default deliver and rebase relationship between the streams. The default deliver relationship says that the child stream delivers to its default target, its parent stream. The default rebase relationship says that the child rebases with the recommended baselines of the parent stream. The default relationships are not modifiable. However, you can deliver your work to a target stream other than the default target.
When it comes time to deliver your work, by default, you deliver to the parent stream. Periodically, the project integrator incorporates the delivered work into new baselines. Then, you rebase your development stream to the parent stream's new recommended baseline.
If you are working from a parent development stream and all developers finish working on the feature, they deliver their work to the parent development stream. The integrator then incorporates their delivered work into a final set of baselines. A parent development stream is an intermediate integration area, the changes in which migrate upward to the integration stream.