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Ch1: Introduction to DW, Nahla - Coggle Diagram
Ch1: Introduction to DW
Definition of DW: A data warehouse is a central repository for storing and managing data
from various sources
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Data (ETL) Process
Transformation
Data is cleansed, validated, and transformed to fit the DW schema for consistency
Loading
Transformed data is loaded into the DW, ready for analysis and reporting purposes
Extraction
Data is extracted from source systems, ensuring relevant and necessary data is obtained
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