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Interacting dynamically with multiple data sources.

Posted on 2004-10-16
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Last Modified: 2010-04-15
Hi!

Our C# desktop application interacts with DB2 using DB2OleDB provider.
I am just curious to know that how can we manage our application to interact with multiple data sources (e.g. SQL Server, Oracle, DB2) dynamically.
What should be the basic methodology to achieve the same and how much changes does one need to make this happen?

I would really appreciate if you can please guide me.

Thanks and regards
Rajesh Khatri
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Question by:rj_khatri
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Farshid-Zaker earned 125 total points
ID: 12328847
Hi Rajesh,
Microsoft has published a 5 layer architecture in Petshop sample (downloadable from MSDN site). There are 2 layers for data access in it. One of them is independent of used RDBMS and the other one is dependent. So, if you want to switch from one database to another one, you will make minimum attempt. Microsoft has published 2 implementation for last layer, one for SQL Server and the other for Oracle. (These layers are named IDAL and DAL Factory, I'm not sure about the exact names.) Take a look at these sample.

Farshid
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by:rj_khatri
ID: 12345204
Many thanks Farshid!
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