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ADO: A few rambling thoughts
Message
From
15/06/1998 16:18:31
John Ryan
Captain-Cooker Appreciation Society
Taumata Whakatangi ..., New Zealand
 
General information
Forum:
Visual FoxPro
Category:
Client/server
Miscellaneous
Thread ID:
00107769
Message ID:
00108368
Views:
42
John

>I was primarily talking about accessign VFP data here.
>Have you ever tried to USE a table that is located remotely.
>It is dog slow.

Do you mean remotely as in on a WAN? If so, why are you USEing it? Surely you should use parameterised queries whether you are using C/S or local tables...

I recall back in the early 3.0 days a number of us did tests with SQL Server and local tables to compare performance. On 10baseT, as I recall FP came in faster than SQL Server in these stereotyped tests (about 2X as fast) but generated 4X the network traffic. That 4X traffic will be the killer on a busy network or WAN. Since then SQL Server has definitely been optimised as well.

But IMHO people are more likely to choose local Vs C/S tables for data volumes, security, network and reliability reasons, not speed reasons. IMHO speed is a bad reason to choose C/S without one of those other factors. This is, of course, not true for Access, Paradox or other F/S systems, which is why the "party line" is that C/S is faster. With properly optimised tables on a decent LAN, FP is often faster.

>However, all things being equal, I don't see a VFP remote view
>being faster or significantly faster than ADO.

Well, if they're the same engine... ;=)

IMHO performance differences will arise once you have the data. How is it bound? How is it processed? How many hoops do you have to jump through?

JR>OK, what sort of HTTP data are you talking about here?
JP>Application data - stored in VFP, SQL/Server, etc.

Apart from images and other blobs, why do you want to ship it using HTTP?

Regards

JR
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us.
"
-- Shakespeare: Coriolanus, Act 1, scene 1
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