How Unity Catalog Enforces Fine-Grained Policies on Starburst Queries

Unity Catalog and Starburst have collaborated to address the challenge of enforcing fine-grained access control policies across multiple data engines, specifically focusing on how Starburst queries can respect the governance policies defined in Unity Catalog without re-implementing policy logic. This solution leverages the Iceberg REST catalog API, which allows for server-side scan planning, ensuring that data is sanitized according to user-specific policies before it reaches the Starburst engine. This approach centralizes governance, eliminates redundant policy layers, and enhances compliance by enabling a single source of policy definition that is respected across different data engines. Unity Catalog acts as the central governance point, while Starburst ensures policy adherence, demonstrating the power of interoperability and open standards in modern data lakehouse architectures. The implementation is designed to work seamlessly across various engines, ensuring that organizations can maintain data privacy and compliance while benefiting from the flexibility of choosing the best tools for different workloads.

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