The logical data warehouse (LDW) pattern lays a lightweight virtualized relational layer on top of data that's stored in a data lake or database. This virtualization layer provides data warehouse access without requiring data movement. This solution can combine online transaction processing (OLTP) data with analytical data from data lakes for a low-complexity, low-latency way to serve business intelligence (BI) and analytics workloads.
https://learn.microsoft.com/en-us/azure/architecture/solution-ideas/articles/logical-data-warehouse
