<Para>
A single <Application>postmaster</Application> manages a given collection of
databases on a single host. Such a collection of
- databases is called an installation or site. Frontend
+ databases is called a cluster (of databases). Frontend
applications that wish to access a given database
- within an installation make calls to the library.
+ within a cluster make calls to the library.
The library sends user requests over the network to the
<Application>postmaster</Application>
(<XRef LinkEnd="PGARCH-CONNECTIONS" EndTerm="PGARCH-CONNECTIONS">(a)),
<Para>
A single <Application>postmaster</Application> manages a given collection of
databases on a single host. Such a collection of
- databases is called an installation or site. Frontend
+ databases is called a cluster (of databases). Frontend
applications that wish to access a given database
- within an installation make calls to the library.
+ within a cluster make calls to the library.
The library sends user requests over the network to the
<Application>postmaster</Application> (<XRef LinkEnd="ARCH-CLIENTSERVER" EndTerm="ARCH-CLIENTSERVER">),
which in turn starts a new backend server process
<!--
-$Header: /cvsroot/pgsql/doc/src/sgml/notation.sgml,v 1.11 2000/12/21 22:55:27 petere Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/notation.sgml,v 1.12 2000/12/22 19:31:56 petere Exp $
-->
<sect1 id="terminology">
<title>Terminology</title>
- <para>
- In the following documentation,
- <firstterm>site</firstterm>
- may be interpreted as the host machine on which
- <Productname>Postgres</Productname> is installed.
- Since it is possible to install more than one set of
- <Productname>Postgres</Productname>
- databases on a single host, this term more precisely denotes any
- particular set of installed
- <Productname>Postgres</Productname> binaries and databases.
- </para>
-
<para>
The
<Productname>Postgres</Productname> <firstterm>superuser</firstterm>
<!--
-$Header: /cvsroot/pgsql/doc/src/sgml/query.sgml,v 1.15 2000/12/22 18:57:50 petere Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/query.sgml,v 1.16 2000/12/22 19:31:56 petere Exp $
-->
<chapter id="query">
are <firstterm>attributes</firstterm>.
As previously discussed, classes are grouped into
databases, and a collection of databases managed by a
- single <application>postmaster</application> process constitutes an installation
- or site.
+ single <application>postmaster</application> process constitutes a
+ database cluster.
</para>
</sect1>