Which year should not be moved once the process of loading and validating historical data has begun?

Which year should not be moved once the process of loading and validating historical data has begun?

• A. End Year
• B. Start Year
• C. Average Year
• D. Beginning Year

Answer: (B)

The starting year should stay fixed once you begin loading and validating historical data. It defines the lower bound of the historical data window and anchors how source data maps to your time dimension. Moving it after the process has started shifts every data point’s period alignment, which can invalidate validations, disrupt calculations, and require reloading and revalidating data. You can extend the window by changing the end year if needed, but the lower bound must remain unchanged to preserve data integrity.

The starting year should stay fixed once you begin loading and validating historical data. It defines the lower bound of the historical data window and anchors how source data maps to your time dimension. Moving it after the process has started shifts every data point’s period alignment, which can invalidate validations, disrupt calculations, and require reloading and revalidating data. You can extend the window by changing the end year if needed, but the lower bound must remain unchanged to preserve data integrity.