yes
It is impossible to get Palkia in sapphire. Palkia is a fourth generation Pokemon and sapphire only has Pokemon up to the third generation.
You can't.
palkia was not created until Pokemon pearl was released
I think the only way to get Palkia in Pokemon Diamond is to use an Action Replay, GameShark, or trade it from Platinum or Pearl.
Trade with someone that has a Palkia. Its as simple as that :)
Palkia is in a cave, but when you reach the end, Palkia will be somehow outside.
Use it on Palkia.
no but can be traded from pearl
Palkia is not available in Ruby as it belongs to Generation 4 (Ruby is Generation 3)
on what version? In pokemon platinum
You just go to Square piller.
you cant enless you trade