At the core of Holistics is a Data Modeling layer. This modeling layer is where the data producers translate business logic into data logic, for example, dictating how metrics should be calculated from certain tables, or what tables can be joined together...
Based on these mappings of business and data logic, when a non-technical user accesses certain metrics, Holistics uses them to construct SQL queries against your data warehouse.
Holistics's Data Modeling Layer is the interface between your SQL database and the data exploration/reporting surface.
Please follow these links to learn more about the core concepts of Holistics: