AW: [V4MD] V4MD Xtra vs. V4MD_client Xtra

[Erich Geiersberger]

>Hi Erich!
>
>Just a few thoughts...
>
>1. Why not use the server always, also for "single user"... If you are a VDN
>member, it will not cost you more since the server with up to 5 connections
>does not cost per installation...
>This way you have much less work and "switching" from single to server mode
>is technically no longer necessary. At least this how I do it and it is
>working perfect.

Thanks Florian.
Because this would make it much more difficult to update. Until now, 
some customers have 2 or 3 single installations. Installing those as 
server versions would lead to more than one server running in a 
network. On updates from single to server I would need to shut down 
running servers somewhere and so on...


>2. Why would you use openXlib? I wonder if you could use both xtras in the
>same folder, calling one or the other.

Hmm, I have tried it once by accident and got crashes. How should I 
call them? The syntax is the same for both.


>3. I guess you can upgrade to the server version but not downgrade? So maybe
>you could call another projector copying the server xtra to XTRAS and
>installing the server, then restart your application.

No need for a downgrade. Copying the right Xtras needed for the final 
version in question is not the problem.
Only during installation I need to open both a single database (to 
read data) and a network database (to write to).


>4. Why read data from single and write to server database? Aren't they
>compatible Ruslan?? If so you could easily change the database path in the
>server ini with BUDAPI maybe, restart and that is it...
>Or you install the server and just COPY (fileXtra) the DB to the database
>folder...

Because people with single versions already have gathered information 
in their personal databases which need to be included into a server 
version during an update. Sure, the databases are the same for single 
user and network, but the information from the existant installations 
need to be gathered. I also need to open old V12 databases, gather 
informations from them and write these to the network database in 
some cases.