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
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