The three phases involved in building a data warehouse from transactional data are extraction,transforming,and loading.

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This statement is true. The three phases involved in building a data warehouse from transactional data are commonly referred to as ETL (extract, transform, load). Extraction involves pulling data from various sources, transformation involves converting the data into a format suitable for the data warehouse, and loading involves inserting the data into the data warehouse itself.

The Three Phases Involved in Building a Data Warehouse from Transactional