On Thu, 16 Jun 2005 13:41:04 +1200, Kyley Harris <[EMAIL PROTECTED]> wrote:
ODBC is just a generic way of communicating with a database using SQL.
If you can provide a ODBC driver for your dbisam then they will be
able to access your data, but I don't believe you can do Cross joins
over databases using it. (I could be wrong) Generally, if they are
referring to your data they will store referential keys from your DB
in their DB. and run 2 DB connections from their middleware etc.
So if you had :
DBISAM table "Actual" with fields Forest and ActualVolume
and
MS-SQL table "Plan" with fields Forest and PlannedVolume
you couldn't, for example do:
SELECT A.ActualVolume, P.PlannedVolume
FROM Actual AS a
JOIN Plan AS p
ON a.Forest = p.Forest
?
But presumably you could read the DBISAM data into a TEMP MS-SQL table and then
do a join on it within MS-SQL?
Not quite sure what you mean by your last sentence, above, Kyley.
BTW there IS a supported DBISAM ODBC driver.
Thanks for the reply.
Mark
As long as it is readonly, and there is a viable DBISAM SQL driver for
ODBC you should have no problems at all, as long as you provide them
the meta data.
R.
Kyley
On 6/16/05, Mark Howard <[EMAIL PROTECTED]> wrote:
Hi All
At one client site I have my application (written in D7) is connected to a
DBISAM database behind a DBISAM server.
This site wants to develop an in-house (Net/MS-SQL) application which accesses
other MS-SQL tables as well as my DBISAM tables (read-only).
Rather than convert my app to MS-SQL it seems that a low cost alternative would
be for them to gain access to my data through an ODBC driver.
I have had no experience with ODBC and so I would be very interested in hearing
the experiences of others who do have direct experience in reading data and
presumably joining tables between MS-SQL databases and other databases accessed
through ODBC (not necessarily DBISAM).
What IS possible? What is not?
Is it robust?
Are there any gotchas?
Are there any good resources that I can read up on?
Thanks
Mark
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Forest Production Systems Ltd
Creators of PSLog - A harvesting information system
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