In the context of ETL, what does data "transformation" primarily involve?
- Data Aggregation
- Data Cleaning and Restructuring
- Data Extraction
- Data Loading
In ETL (Extract, Transform, Load) processes, data "transformation" primarily involves cleaning and restructuring the data. This phase ensures that data is in a suitable format for analysis and reporting, involving tasks like data cleansing, normalization, and data quality improvement.
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