postgresql 9.4 architecture

PostgreSQL Architecture

Based on PostgreSQL documentation and various articles, I comprehend the PostgreSQL Architecture as below:
PostgreSQL instance consists of set of Process and Memory. PostgreSQL uses a simple “process per-user” client/server model. The major processes are:

The ‘postmaster’ which is:

supervisory daemon process,
‘postmaster’ is attached to shmmem segment but refrains from […]

read more