[KDE-pim] New Install: AKONADI wit PostgreSQL

Hello,

actually I'm preparing my new system running MANJARO-KDE; the system is 
fresh, nothing from AKONADI, KDE-PIM or PostgreSQL is installed so far.

I'm using PostgreSQL for several databases so I'll install it anyway. I 
remember several discussions here, that PostgreSQL might be a better 
choice than MariaDB for AKONADI. Personally I'd prefer to have only one 
database system (PostgreSQL) running.

I'd appreciate any advice and link for an instruction, how to set it up 
correctly. What has to be considered to use PostgreSQL for my personal 
databases and AKONADI, as well; f.e. an additional scheme for AKONADI?

Thanks, Michael