Do you know about rectangular dimension tables?
💡 Model Answer
A rectangular dimension table is a type of dimension table used in star schema designs where each row represents a unique entity and each column represents an attribute of that entity. Unlike hierarchical or snowflake dimensions, rectangular dimensions are flat and contain no nested or multi-level relationships. They are ideal for dimensions that have a fixed set of attributes and do not require further normalization, such as a customer dimension with fields like CustomerID, Name, Email, and Address. The rectangular structure simplifies query logic and improves performance because joins are straightforward and indexes can be applied directly to the columns. However, if a dimension has many optional or repeating attributes, a snowflake or hierarchical design might be more appropriate.
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