[GENERAL][HACKERS]data fragmentation - Mailing list pgsql-admin

From Jaime Casanova
Subject [GENERAL][HACKERS]data fragmentation
Date
Msg-id BAY8-F8MdlKfreeJa2y0001374e@hotmail.com
Whole thread Raw
List pgsql-admin
Hi,

i have a theorical question. i was thought that data fragmentation can cause
a
loss of performance when retrieving data from a database. Some DBMS solved
this
with dbspaces, but postgresql doesn't support this concept.
so, pgsql databases tend to suffer from data fragmentation?
if yes, what is the solution you recommend?

also i was thought that even when DBMS support dbspaces DELETEing records
may
cause data fragmentation anyway.
so, can i think of DELETE statement as a double-edged sword?
it is indifferent in pgsql - it doesn't support dbspaces anyway?

thanks in advance,
Jaime Casanova (el_vigia)

_________________________________________________________________
The new MSN 8: smart spam protection and 2 months FREE*
http://join.msn.com/?page=features/junkmail


pgsql-admin by date:

Previous
From: Sai Hertz And Control Systems
Date:
Subject: PHP and autocommit of PostgreSQL 7.4
Next
From: Peter Eisentraut
Date:
Subject: Re: PHP and autocommit of PostgreSQL 7.4