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Category: Data Warehouse Table

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Easily Mark Deleted Source System Rows in a Data Warehouse Table

Posted Oct 17, 2017 by Delora Bradish

Even though many people think data warehouses ETLs (extract, transform and load) should contain insert data flows only, the vast majority of people I work with also have to deal with updates. Many also have to handle marking data warehouse rows as IsDeleted = "Y" in their ODS and EDW data repositories.

If you are working with a dimension table with less than 500K rows (an estimate), a traditional lookup task might work just fine. The data flow would look like this:


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