thanks @dimitri.... Good Idea...
But i dont know what do you mean about Pull / push Methode?..
Please...Detail... and example...
can i read data have Change or Not ?? how?
 
like IBLIENTDATASET.ChangeCount()
Thanks...

--- On Tue, 2/17/09, Dimitry Sibiryakov <sd@...> wrote:

From: Dimitry Sibiryakov <sd@...>
Subject: Re: [firebird-support] Slow response on a big database?
To: firebird-support@yahoogroups.com
Date: Tuesday, February 17, 2009, 4:37 AM

> Yes, in this case EVENTS also would be good solution for the problem.
> Polling the database in predifined intervals is a very resource-killing
> method.

Events also are rather expensive. If I were the topic-starter, I
would switch changed data delivery from pull-method to push-method. Let
application that change data inform others about new data. In this case
they won't have to query unchanged data from database.

SY, SD.


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