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What is the primary purpose of catalogs in Unity Catalog's three-layer namespace?
To store actual data files in cloud storage
To provide the highest level of data isolation and access control
To group related tables and views within a business domain
What is the key difference between managed and external tables in Unity Catalog?
External tables can be queried faster than managed tables
Managed tables store data in Unity Catalog-controlled locations, while external tables reference data in external storage locations
Managed tables support Delta format only, while external tables support multiple formats
Which statement best describes materialized views in Unity Catalog?
Materialized views always provide real-time data because they refresh automatically on every query
Materialized views can only be created on external tables stored in Azure Data Lake Storage
Materialized views precompute and cache results to improve query performance for complex aggregations
What is the purpose of foreign catalogs in Unity Catalog?
To automatically migrate data from external databases into Unity Catalog managed storage
To enable read-only access to external database systems while maintaining Unity Catalog governance
To create backup copies of Unity Catalog catalogs in external storage for disaster recovery
When configuring AI/BI Genie instructions for a Genie space, what is the recommended approach?
Add all available tables from Unity Catalog to ensure complete data coverage
Immediately create 100 SQL example queries to cover all possible user questions
Start with a small, focused set of tables and expand based on user feedback and actual question patterns
You must answer all questions before checking your work.
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