Paradox Community

Items in pnews.paradox-client_server

Subject:Re: Postgresql connection
Date:Mon, 4 Feb 2019 08:28:56 -0600
From:Mark Bannister <>

I've been going through your library you shared a while (thank you very 
much) and that all makes sense so far.
So I still use PRIV directory as I do now, that's good.
Currently I use sub-set data in PRIV for any form that is being edited. 
I use a flag field to know if it is changed,deleted, etc.  I assume I 
still need the flag field? Oh, just noticed you were doing it 
immediately.  I think I like my way better.  You have a chance to undo 
any edit but it is the same logic.  (Immediately is a bit cleaner and 
less prone to issues though I would think.)
I knew about pass-through SQL but I'm not sure how it works. Looks like 
executeSQL is pass-through by default though from the help.

I've been slowly converting all queries to sql over the last year.  The 
down side is that local sql is so quirky and simple that many queries 
have to be broken into smaller ones in order to work.

Finally a real question, do you display data in forms directly from the 
postgreSQL server (not sub-set data) and use the Pdox datamodel linking?

On 2/2/2019 6:27 PM, Tom Krieg wrote:
> Yes, you still need the BDE. HOWEVER, if you design everything 
> correctly, you can have a library that handles the calls to the SQL 
> database, use pass-through SQL (i.e. don't use the pgSQL database in 
> TCursors or the data model) and use SQL to extract subsets of the 
> database to local (priv) tables for forms, reports etc etc. There is an 
> easy way to display records (extracted from a SQL database to priv) in a 
> tableframe and trap datapost or dataunlock, format an UPDATE query and 
> send that to the database. So if users update a record in a TF, the 
> update is immediately pushed to the pgSQL server. If you think it 
> through carefully you will have a quick and efficient database that has 
> none of the Paradox limitations, index problems or RI problems. Also, 
> users do not need to have localshare=TRUE and don't need to share a NET 
> file.
> Better still, if you put all your business logic, update logic and 
> extract logic in functions, the database server handles those for you. 
> Just use Paradox for display windows, the GUI and reports.
> Mark Bannister wrote on 3/02/2019 3:27 AM:
>> So, I can't completely get rid of BDE then?  Everything still goes 
>> through  BDE?
>> On 2/1/2019 7:22 PM, Tom Krieg wrote:
>>> If your BDE isn't configured to create ODBC aliases automatically, 
>>> then yes.
>>> Mark Bannister wrote on 2/02/2019 9:39 AM:
>>>> I'm confused.
>>>> I've seen a few posts about using postgresql but am unclear about 
>>>> the role of the BDE.
>>>> I created a System ODBC connection to my postsgres server.
>>>> Now do I have to create an alias in the BDE....?
>>>> -- 
>>>> Mark B

Copyright © 2004