Architecture :: Query Data Across Different Database?

Jul 19, 2010

We have a requirement in which we need to query data across 2 different databases ( 1 in SQL Server and other in Oracle).

Here are the scenarios which need to be implemented:

Query: Get the data from one database and match for values in other Update: Get the data from one database and update the objects in other Technology that we are using:, C#

The options that we have thought about:

Staging area in one database Link Server ( can't go with the approach as it is not allowed due to organization wide policy) Create web services Create 2 different DAL and perform list operations with the data from 2 sources in DAL.

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