Are you sure that's the right link? I watched it and it explained Parallel Views and Perspective Views in Catia. There was nothing about the interior parts.
If you want to see the inside of an assembly in SW, you can either hide the exterior parts or use one of the wireframe views.
I know wireframe feature.
Is there a work in solidworks for this property?
Ahmet, the effect they're talking about in the video where you can zoom inside a part is a result of something called clipping planes.
If you create a camera and set your view to use it (you'll have to unlock the camera to rotate the view), then you can zoom through walls and the like.
However, camera views, like perspective views affect selection (edge selection in particular can be diffficult) so there is a down side.
If you want to be able to work inside of an assembly try using 'make transparent' on the outter components or advanced selection to hide the outer components or make them dispaly in HLR and then turn on 'select through transpoarency' (Tools==>Options: System Options: Display/Selection)