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The Semantic Layer
Positioned after the data has been modeled in a data warehouse or lakehouse, the semantic layer acts as a performance-enhancing data querying layer for reporting, offering a more efficient and business-friendly view of the data. By employing aggregations, calculations, and business-oriented terms and concepts, the semantic layer simplifies the complexity of technical data structures and caters to the needs of business users. The end result is a well-defined data model that effectively translates the underlying data structures of the warehouse or lakehouse into business-oriented terms. The value of this is to allow reports to more quickly query and visualize data, as well as allow business people to understand the data structures ...
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