Re: Database synchronization - Mailing list pgsql-sql

From Jyoti Seth
Subject Re: Database synchronization
Date
Msg-id 6c3fb5eb0707310102s73bf7516w8dd157c550e2cf7d@mail.gmail.com
Whole thread Raw
In response to Re: Database synchronization  ("Jyoti Seth" <jyotiseth2001@gmail.com>)
Responses Re: Database synchronization  (Richard Huxton <dev@archonet.com>)
List pgsql-sql
Hello,
 
I have one query related to slony-I. Can I replicate table data in different schemas. Say if have table 'country' in database 'stock' and schema 'stocksch'. And I want to replicate the data in table 'country' of database 'smsdb' and schema 'smssch'. Here, the country table is present in two different schemas. Can I replicate the country table data from schema stocksch to schema smssch or I have to create a schema with the same name for replication.
 
Thanks,
Jyoti Seth

 
On 7/26/07, Jyoti Seth <jyotiseth2001@gmail.com> wrote:
Thanks a lot for your suggestion. It will help me in taking the decision.

-----Original Message-----
From: Richard Huxton [mailto:dev@archonet.com]
Sent: Wednesday, July 25, 2007 6:10 PM
To: Jyoti Seth
Cc: pgsql-sql@postgresql.org
Subject: Re: [SQL] Database synchronization

Jyoti Seth wrote:
> My master database contains prices of some products that vary after few
> hours and many other details that are also reqd in Db2 which doesn't
change
> that frequently. My slave database contains the details of queries sent by
> the customers.
> These queries are to find the price of the product and other details.
(Some
> part of the info reqd from Db1 varies frequently where some information is
a
> kind of master data that doesn't vary frequently).
>
> So should I use all the ways i.e #2 or #3 to get price info and #1 (slony)
> for other details or there is some other better option

If you can live with a time-lag measured in seconds, then slony will
work just fine. If you can't then you'll want dblink.

One other thing you might consider - if you attach "valid_from" time to
each price then you can put them in place in advance, and make sure they
are replicated before needed.

--
  Richard Huxton
  Archonet Ltd


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