๐ Data Warehousing Stages
๐ 1. Data Extraction from Source System
๐งน 2. Data Scrubbing (Cleansing): A process to upgrade the quality of data before it is moved into a data warehouse.
๐ 3. Data Transformation and Cleaning
๐พ 4. Data Storage in the Warehouse
๐๏ธ 5. Indexing & Aggregation (Optional, Post-Loading Step)
๐ 6. Data Presentation and Reporting
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