you may check

  • Flowchart of the PostgreSQL backend
  • Database Internals Presentation
  • The Implementation of PostgreSQL

    • in the URL below

    http://developer.postgresql.org/


    Regds
    Mallah.

    Cláudia Morgado wrote:
    Hello!
     
    We working currently with the Oracle and we would like to know if postgresql has some similar components as the concept of instance, buffer database cache, Redo log buffer, datafiles, background process, etc.
     
    How postgre works? It works in memory?
     
    There is some figure that ilustrates your architecture?
     
    regards,
    Carla Mello e Cláudia Morgado.