Re: Basic questions before start

On 29/07/2003 18:04 gogulus@eqnet.hu wrote:
> Hello,
>
>   I am planning to implement a system, where there is one Master database
> running on a Linux box with as many resources as necessary, and there are
> one or more client pc computers,with processor speed of 100 Mhz, memory
> of 32-64 Mbytes and a 10Mb/s network card.
>
>   The major task is that the clients should work on the actual state of
> data, which means the basic database (data, unchangeable for clients),
> and some statistical data on other clients, and they should not stop work
> when there is no network connection to the master pc. They should give
> back their detailed transactions on the basic data to the master pc.
>
>   For this reason I consider to run postgres on the client computers, but
> I am quite concerned about system overhead.
>
>   The clients will only do basic database work:
>    - selects from the database, without nested selects (or with nested
> selects with the maximum of 1-2 levels)
>    - writing their transactions into the database, with commit/rollback
> functionality.
>    - update some tables because of synchronization with master db.
>    - update some tables to summarize the value of transactions. (They
> could be done by triggers, but if they need resources, there is an
> existing solution with basic operations).
>
>   Size of the database: The basic data includes 50-100.000 elements in
> 3-4 tables each, and much less data in other tables. The number of tables
> is around 100.
>
>   I would like to know the opinion of experienced users of Postgres, if I
> can embark upon this road, or should choose an other way which uses an
> other db system with lower resource-needs.

I've run Linux together with Gnome 1.4, Apache, Sendmail, Postgresql and a
Java VM on a laptop with 64MB RAM with no problem. You just have to accept
that it will be a bit slower.

HTH

--
Paul Thomas
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