Business Intelligence and Data Warehousing
Business Objects | Informatica | Oracle | SQL
A question that I often receive is: “What should I do to learn how to develop ETL mappings using Informatica PowerCenter?” Here are the steps that I would take to learn how to do extract, transform, and load with Informatica PowerCenter. I assume that you already have knowledge of SQL. If you don’t know SQL or need to learn more …
There are situations where you need to keep a source and target in sync. One method to do this is to truncate and reload. However this method is not that efficient for a table with millions of rows of data. You really only want to: insert rows from the source that don’t exist in the target update rows that have …
