There is no problem installing SQL-Server 2005 and 2008 on the same box.
However, one of these must be at last a named instance because you cannot
have to unnamed (or default) instances of SQL-Server on the same box.
--
Sylvain Lafontaine, ing.
MVP - Technologies Virtual-PC
E-mail: sylvain aei ca (fill the blanks, no spam please)
"Marilyn" wrote in message
> Hi,
>
> I'm new to this and I posted my question in the wrong place... so I am
> reposting it here.
>
> Does anyone know if it is possible to install SQL Server 2005 and SQL
> Server
> 2008 on the same development machine or the same Web Server machine?
>
> I am developing a GIS-based web application (ESRI's ArcGIS) that uses SQL
> Server 2005 as the backend database with a single-server architecture.
> But I
> also have mobile devices (running on Windows Mobile 5 and 6) that
> synchronizes with it. Now I need to upgrade to SQL Server 2008 (I'd like
> to
> try its spatial capability). I'm wondering if there would be "fatal"
> issues
> between the two (e.g., will my mobile apps still synchronize with the
> database, will SQL Server 2005 conflict with 2008 in the dev machine,
> etc.)
>
> Also, do I install the full version SQL Server on the Web Server or do I
> use
> the client license on it? Thought I read somewhere this is the way to go
> with web apps.
>
> Appreciate any help.
>
>> Stay informed about: Installing SQL Server 2005 and 2008 on the same box