Web Reference: What is a logical data warehouse? A logical data warehouse (LDW) is a data management architecture in which an architectural layer sits on top of a traditional data warehouse, enabling access to multiple, diverse data sources while appearing as one “logical” data source to users. Sep 23, 2024 · A logical data warehouse (LDW) is a data warehouse that provides a virtual data layer on top of existing data sources. This layer enables users to interact with data from diverse sources without the need for ETL, which eliminates the need for data to move through ETL processes. Apr 16, 2025 · An LDW does not physically house data but holds metadata that defines the context of data, making it possible for data consumers to find and access a specific piece of data without having to know where it is stored.
YouTube Excerpt: Tom Reilly (Cloudera) and Scott Gnau (Teradata) discuss the role and importance of Gartner's
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