Frequently Asked Questions (FAQ) for PostgreSQL
- Last updated: Mon Oct 9 20:28:14 EDT 2006
+ Last updated: Sat Oct 14 19:08:19 EDT 2006
Current maintainer: Bruce Momjian (bruce@momjian.us)
The major IRC channel is #postgresql on Freenode (irc.freenode.net).
To connect you can use the Unix program irc -c '#postgresql' "$USER"
irc.freenode.net or use any other IRC clients. A Spanish one also
- exists on the same network, (#postgresql-es), and a French one,
- (#postgresqlfr). There is also a PostgreSQL channel on EFNet.
+ exists on the same network, (#postgresql-es), a French one,
+ (#postgresqlfr), and a Brazilian one, (#postgresql-br). There is also
+ a PostgreSQL channel on EFNet.
A list of commercial support companies is available at
http://www.postgresql.org/support/professional_support.
overflow at 4 billion, and then the OIDs start being duplicated.
PostgreSQL uses OIDs to link its internal system tables together.
- To uniquely number columns in user tables, it is best to use SERIAL
+ To uniquely number rows in user tables, it is best to use SERIAL
rather than OIDs because SERIAL sequences are unique only within a
single table. and are therefore less likely to overflow. SERIAL8 is
available for storing eight-byte sequence values.
Multi-master replication allows read/write queries to be sent to
multiple replicated computers. This capability also has a severe
impact on performance due to the need to synchronize changes between
- servers. Pgcluster is the most popular such solution freely available
+ servers. PGCluster is the most popular such solution freely available
for PostgreSQL.
There are also commercial and hardware-based replication solutions
alink="#0000ff">
<H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1>
- <P>Last updated: Mon Oct 9 20:28:14 EDT 2006</P>
+ <P>Last updated: Sat Oct 14 19:08:19 EDT 2006</P>
<P>Current maintainer: Bruce Momjian (<A href=
"mailto:bruce@momjian.us">bruce@momjian.us</A>)
(<I>irc.freenode.net</I>). To connect you can use the Unix
program <CODE>irc -c '#postgresql' "$USER" irc.freenode.net</CODE>
or use any other IRC clients. A Spanish one also exists
- on the same network, (<I>#postgresql-es</I>), and a French one,
- (<I>#postgresqlfr</I>). There is also a PostgreSQL channel on EFNet.</P>
+ on the same network, (<I>#postgresql-es</I>), a French one,
+ (<I>#postgresqlfr</I>), and a Brazilian one, (<I>#postgresql-br</I>).
+ There is also a PostgreSQL channel on EFNet.</P>
<P>A list of commercial support companies is available at <A href=
"http://www.postgresql.org/support/professional_support">
being duplicated. PostgreSQL uses <SMALL>OID</SMALL>s to link its
internal system tables together.</P>
- <P>To uniquely number columns in user tables, it is best to use
+ <P>To uniquely number rows in user tables, it is best to use
<SMALL>SERIAL</SMALL> rather than O<SMALL>ID</SMALL>s because
<SMALL>SERIAL</SMALL> sequences are unique only within a single
table. and are therefore less likely to overflow.
<P>Multi-master replication allows read/write queries to be sent to
multiple replicated computers. This capability also has a severe impact
on performance due to the need to synchronize changes between servers.
- <A href="http://pgfoundry.org/projects/pgcluster/">Pgcluster</a> is the
+ <A href="http://pgfoundry.org/projects/pgcluster/">PGCluster</a> is the
most popular such solution freely available for PostgreSQL.</P>
<P>There are also commercial and hardware-based replication solutions