5. Terminology and Notation
An administrator is generally a person who is in charge of installing and running the server. A user
could be anyone who is using, or wants to use, any part of the PostgreSQL system. These terms should
not be interpreted too narrowly; this documentation set does not have fixed presumptions about system
administration procedures.
We use
/usr/local/pgsql/
as the root directory of the installation and
/usr/local/pgsql/data
as
the directory with the database files. These directories may vary on your site, details can be derived in the
Administrator’s Guide.
In a command synopsis, brackets (
[
and
]
) indicate an optional phrase or keyword. Anything in braces (
{
and
}
) and containing vertical bars (
|
) indicates that you must choose one alternative.
Examples will show commands executed from various accounts and programs. Commands executed from
a Unix shell may be preceded with a dollar sign (“
$
”). Commands executed from particular user accounts
such as root or postgres are specially flagged and explained. SQL commands may be preceded with “
=
>
”
or will have no leading prompt, depending on the context.
5.
http://www.postgresql.org
6.
http://www.postgresql.org/users-lounge/
v
Preface
Note: The notation for flagging commands is not universally consistent throughout the documentation
set. Please report problems to the documentation mailing list <
pgsql-docs@postgresql.org
>.
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