I've heard about two kind of database architectures.
master-master
master-slave
Isn't the master-master more suitable for today's web cause it's like Git, every unit has the whole set of data and if one goes down, it doesn't quite matter.
Master-slave reminds me of SVN (which I don't like) where you have one central unit that handles thing.
Questions:
What are the pros and cons of each?
If you want to have a local database in your mobile phone like iPhone, which one is more appropriate?
Is the choice of one of these a critical factor to consider thoroughly?