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A data catalog is a centralized, searchable repository that provides metadata and contextual information about an organization’s data assets, enabling users to discover, understand, and manage available data. It typically includes details like data ownership, classification, lineage, and usage guidelines, streamlining data discovery and fostering a more data-driven culture through better transparency and governance.

Some of the well-known data catalogue tools are: Alation, Collibra, AWS Glue Data Catalog, Informatica Data Governance and Catalog