Structural Reconnaissance Table-Level Inventory Start every new dataset encounter by answering these questions: - What is the total row and column count? - What does each row represent (the grain)? - Which column or columns uniquely identify a row? - When was the most recent data loaded? - What is the earliest date in the dataset? Classifying Columns by Role Assign every column to one of these categories: - Key : Primary keys, foreign keys, entity identifiers - Attribute : Categorical fields used for grouping or filtering (region, status, plan type) - Measure : Numeric fields intended for agg…