Hi

We have a front end/back end type access app. We would like to upsize the
app to sql server but can not re-write the whole app immediately. Is it
feasible to just upsize the backend (data part) only to sql server using
upsizing wizard without any drastic effect on the performance of the front
end access app (which would link to the tables on the sql server after
upsizing)?

Thanks

Regards

If you make no changes at all, there will be a small and possibly
non-noticable decrease in performance due to SQL-Server's logging function.
It is certainly easy enough to test it by doing the upsize and testing the
performance on your biggest transactions.

Start replacing your bound forms with ones based on views and stored procs,
doing the slowest loading ones first. Access mdb's integrate quite nicely
with SQL-Server and tend to be slightly preferable for reporting.
--
Arvin Meyer, MCP, MVP
Microsoft Access
Free Access downloads:
http://www.datastrat.com
http://www.mvps.org/access

"John" <John (AT) nospam (DOT) infovis.co.uk> wrote

On Wed, 29 Sep 2004 02:40:44 +0100, "John" <John (AT) nospam (DOT) infovis.co.uk>
wrote:

Try it.
The upsize wizard will create a new app with attached tables to the
sql server. You be the judge on how well that works for your app.

Purists don't like this approach. It's not client/server and you're
not taking advantage of what the SQL Server has to offer.

Pragmatists have an app that they can use right away, and optimize
only the performance bottlenecks.

-Tom.

"John" <John (AT) nospam (DOT) infovis.co.uk> wrote:

I'd agree with Arvin and Tom's comments.

Also see my Random Thoughts on SQL Server Upsizing from Microsoft Access Tips page at
http://www.granite.ab.ca/access/sqlserverupsizing.htm

Tony
--
Tony Toews, Microsoft Access MVP
Please respond only in the newsgroups so that others can
read the entire thread of messages.
Microsoft Access Links, Hints, Tips & Accounting Systems at
http://www.granite.ab.ca/accsmstr.htm

Tom van Stiphout wrote:
In what way is it not "client/server"? The "server" will still execute
the vast majority of the data processing respoding to requests from the
"client".


--
I don't check the Email account attached
to this message. Send instead to...
RBrandt at Hunter dot com

Rick Brandt <rickbrandt2 (AT) hotmail (DOT) com> wrote:

Maybe not "efficient client/server".

Tony
--
Tony Toews, Microsoft Access MVP
Please respond only in the newsgroups so that others can
read the entire thread of messages.
Microsoft Access Links, Hints, Tips & Accounting Systems at
http://www.granite.ab.ca/accsmstr.htm

"Tony Toews" <ttoews (AT) telusplanet (DOT) net> wrote

Well sure, I would agree with that

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On Tue, 28 Sep 2004 21:21:25 -0500, Rick Brandt
<rickbrandt2 (AT) hotmail (DOT) com> wrote:

It depends of course on your definition of client/server. My
definition is that most processing occurs on the server, and the app
is written so as to reduce network traffic as much as reasonably
possible.
Just attaching to SQL Server tables doesn't give you these benefits.

-Tom.

On Wed, 29 Sep 2004 06:29:09 -0700, Tom van Stiphout
<no.spam.tom7744 (AT) cox (DOT) net> wrote:

Fair definition, and reducing network traffic is absolute top
priority, but I often wonder why we want to do as much processing as
possible on the server. I try to do as little as possible, essentially
just the generation of recordsets.

Most heavily used systems have much more total procesing power in the
clients than in the server. This is extremely so in the case of
successful web apps, even with Jscript. You can't change this by
promoting simpler clients as processing power is very cheap and users
like having it. The only advantage of using a server at all
(admittedly this is an OVERWHELMING advantage) is the collection of
data, updating etc in a single place for integrity and sharing.

For non-web client-server there is the problem of deployment and
updating of the client-side software. However this can be done using
the Internet in various ways.
David Schofield

On 29 Sep 2004 09:29:12 -0500, d.REMOVEschofield (AT) blueyonder (DOT) co.uk
(David Schofield) wrote:

The two are related.
In order to reduce network traffic, you have to process on the server.
The example I always use:
select * from customers where state='AZ'
In Access, that pulls the whole table over the wire, or at least the
index on state if there is one, and the query is processed locally.
49/50 of the results are thrown out (assuming equal distribution of
customers over the country), and the customers of Arizona are left to
play with.
In SQL Server, the server processes the request, and only sends 1/50
of the data over the wire.

Another reason for server processing is that SQL Server supports
multiple processors very well, and can take advantage of all available
server hardware (including >4GB of memory), and you can also scale to
a server farm to process requests more quickly (or for failover/
redundancy). Thus it becomes more realistic to "throw more hardware at
the problem". Upgrading all clients to gain more speed is
exponentially more expensive.

-Tom.