Question 400
A report uses a large fact table containing ten descriptive columns that never appear in measures, relations or visuals. Which action is most appropriate for the stated business outcome?
Explanation
Correct Answer
Column pruning reduces compressed data and scan overhead, supporting smaller model by removing dead columns.
Incorrect Answers
Coarser rows reduce memory while retaining permitted reporting resolution. It would address trim excessive time-series detail, not smaller model by removing dead columns.
Proper normalization of repeated descriptive fields can reduce fact-table redundancy. That targets avoid repeated constant text in fact, not smaller model by removing dead columns.
Integer surrogate keys can improve relationship storage efficiency and lookup performance. It is useful for replacing unwieldy text join keys, not for smaller model by removing dead columns.






Microsoft Power BI Data Analyst (PL-300) Practice Tests