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EAI vs. data warehousing as an integration solution

When should you look at EAI vs. data warehousing as an integration solution?
They generally go hand-in-hand. Aggregating messages and aggregating raw data are similar problems. Put a database next to a message broker, and voila, you have another data warehouse. Even purists will generally concede that applications need a transaction database for audit and reconciliation. There is no pure EAI where everything is message based with no persistence.
This was first published in April 2002

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