Re: Sync 2 tables in 2 databases

On Wed, Mar 11, 2009 at 1:29 PM, SHARMILA JOTHIRAJAH
<sharmi_jo@yahoo.com> wrote:
>
>
>> > Hi,
>> > I have 2 postgres databases with similar structure. I
>> want to keep some tables in sync in these 2 databases(They
>> can be synced just once a day). Is there a way to archive
>> this using function ?
>> > Something like....
>> >
>> >  Select syncTable('foo')
>> >
>> > where syncTable is a function that compares table
>> 'foo' in db1 with table 'foo' in db2 and make
>> changes(update/insert/delete) to 'foo' in db1
>>
>> You can either truncate it on the destination db every so
>> often, then
>> dump / restore the data back into it, drop it and restore
>> it, write a
>> simple replication script that looks for missing  /
>> updated rows, or
>> my suggestion, set up replication with slony and be done
>> with it.  Of
>> course, you don't mention if you need one or two way
>> synchronization,
>> which makes a big difference in how you choose to do
>> things.
>>
>
> Also, Is there a way to archive this using dbi_link? In Oracle I do this using db_link..is it possible to get this
doneusing postgres' dbi_link? 

there's a package called dblink for linux.  Not sure it could automate
things, but if you're using dbi_link in oracle, dblink in pgsql can
accomplish the same basic thing.