En hurtig internetsøgning viste disse dokumenter, jeg finder det første meget interessant:
- http://raghavt.blogspot.com/2011/ 04/postgresql-90-architecture.html
- http://cisc322.files.wordpress.com/2010/ 10/conceptual_architecture_of_postgresql.pdf
- http://vibhork.blogspot.com/ 2011/04/postgresqlpostgres-plus-advanced-server.html
- http://www.interdb.jp/pg/pgsql02.html
- https://www.slideshare.net/EnterpriseDB/overviewutilityprocesses-finalaug222013