Need help in Migration of data !

We developed a application using Apex and currently it is going through client testing.
There is one challenge at client side; there are some third party legacy inventory systems at client side where there is data stored in databases like Paradox, SQL server, XML the customers have been using them for last 10 to 15 years.
Now there is some amount of data where they enter into those system; we want to extract some of the data and show in our application. Ours is a hosted On Demand application we need to migrate the data from the client machine and push into our server so that they can view the data online. And we want to run a scheduler every day to extract the data .
Do you have any idea how we can do this in APEX or any tool that can support our need.
Did you hear about spectral.com (full convert)
I really appreciate your help on this.

Hi,
it is not too difficult to load data into a database using only Apex tools, but the problem with this is that it can't be completely automated, as at some stage, a user would have to do a manual file upload.
In order to achieve completely automated upload you would need access at a lower database and database server O/S level as well as have direct connectivity between your Apex server and the legacy source systems. As your Apex system is a "hosted On Demand application" you may be severely limited in your access at those levels.
Depending on your access, you would typically extract and load data from other non-oracle sources using technologies like Oracle's heterogeneous Gateways or third party odbc connectivity and use database links. Or you could automate files to be dropped from the legacy systems to somewhere that is accessible to the destination system where it could be loaded using tools such as SQL Loader or External Tables. This could be scheduled using tools such as cron or dbms scheduler.
I know this is very general, but I hope it points you in the right direction.
Regards
Andre

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