Question: Why is an effective ETL process essential to data warehousing? a. The ETL process removes the necessity for a predefined database schema. b. Small- to

Why is an effective ETL process essential to data warehousing?

a. The ETL process removes the necessity for a predefined database schema.

b. Small- to medium-sized businesses need a suitable data warehousing option.

c. Horizontal scaling of a relational database enables multiple servers to operate on the data.

d. "Dirty data" can result in incorrect or misleading statistics used for decision making.

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