A virtual semantic layer virtually integrates heterogeneous data from many sources and provides a common meaning to linked datasets. The semantic layer acts as an intermediary between data consumers and enterprise data sources, simplifying the underlying data architecture. When users or their analytics tools submit SQL queries, the semantic layer processes these queries across all data sources, regardless of their location, without necessitating any data movement.
By providing end users with a single source of truth, the semantic layer eliminates data silos, offering a comprehensive view of data across the enterprise and empowering data-driven decision-making.