January 2019
Beginner
556 pages
14h 19m
English
Content preview from Learning PostgreSQL 11 - Third Edition
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PostgreSQL architecture
PostgreSQL uses the client/server model, where the client and server programs can be on different hosts. The communication between the client and server is normally done via TCP/IP protocols or via Linux sockets. PostgreSQL can handle multiple connections from a client. A common PostgreSQL program consists of the following operating system processes:
- Client process or program (frontend): The database frontend application performs a database action. The frontend can be a web server that wants to display a web page or a command-line tool to do maintenance tasks. PostgreSQL provides frontend tools such as psql, createdb, dropdb, and createuser.
- Server process (backend): The server process manages database files, accepts ...
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