How to create user in postgreSQL?

• Database users are completely separate from operating system users.
• Database users are global across a database cluster.
• Username must be unique and require authentication.
• Every connection made to a database is made using a user.
• enterprisedbis a predefined superuserin default data cluster.
• Pre-defined superusername can be specified during initialization of the database cluster.
• This pre-defined superuserhave all the privileges with GRANT OPTION.

create user thourg commad
The create user utility can also be used to create a user
Syntax:
create user[OPTION]... [ROLENAME]

• Use --help option to view the full list of options available.

Ex:  create user --help

also see below

what is postgreSQL

Why postgresSQL

History of PostgreSQL

postgreSQL - PSQL MATA Commands

postgreSQL what is schema?

postgreSQL Connecting to a Database

postgreSQL Create and access Database

How to create user in postgreSQL?

postgreSQL Grant/Revoke Privileges

postgreSQL Tablespaces and datafiles

postgreSQL How to start server and stop server?

postgreSQL perfomance

postgreSQL How to create cluster?

postgreSQL Queries

postgreSQL routine maintenance and proactive-maintanace.

postgresql-logging