What is a data catalog, and why is it important in data management?
💡 Model Answer
A data catalog is a metadata repository that describes the data assets in an organization. It stores information such as table names, column definitions, data types, lineage, ownership, and usage statistics. By providing a searchable interface, it enables data analysts and scientists to discover, understand, and trust the data they use. Data catalogs also support governance by tracking data quality, access controls, and compliance with regulations. Popular examples include AWS Glue Data Catalog, Azure Purview, and Apache Atlas.
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