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Explain ETL phases in creating a data warehouse.
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| written 8.9 years ago by |
| ETL for fact tables. |
|---|
| ETL for dimension tables. |
| Write procedure for all data loads. |
| Organise data staging area and test tools. |
| Plan for aggregate tables. |
| Determine data transformation and clearing rules. |
| Establish comprehensive data extraction rules. |
| Prepare data mapping for target data elements. |
| Determine all the data sources, both internal … |