Unfortunately, as of now, there isn't a direct, seamless integration between Unity Catalog and Athena to automatically synchronize table updates.

However, here are a few potential approaches to achieve your desired outcome:

1. AWS Glue Data Catalog:

• Manual Synchronization:
  • Create a Glue Crawler to scan the S3 location where your Delta Lake tables are stored.
  • Configure the crawler to update the Glue Data Catalog periodically.
  • Athena can then query the Glue Data Catalog to access the latest table definitions.
• Semi-Automated Synchronization:
  • Use a scripting approach (Python, Scala) to trigger the Glue Crawler whenever changes are made to Unity Catalog.

2. Databricks Delta Sharing:

• Share Delta Tables:
  • Share your Delta tables from Databricks with external users or applications.
  • Configure Athena to access these shared Delta tables directly.
  • This approach provides a more seamless integration but requires careful management of access controls and data security.

3. Custom Connectors or APIs:

• Develop a Custom Connector:
  • Build a custom connector to integrate Athena with Databricks Unity Catalog.
  • This approach requires significant development effort and may not be feasible for all use cases.
• Use APIs:
  • Leverage the Databricks REST API to retrieve metadata about tables and schemas from Unity Catalog.
  • This information can then be used to update the Glue Data Catalog or create custom Athena views