SQL Catalogs

Catalogs provide metadata, such as databases, tables, partitions, views, functions and other information that is needed to access the data stored in a database or other external systems.

For more information about Flink Catalogs, see the Apache Flink documentation.

In-memory catalog

A generic in-memory catalog is enabled by default. However when the in-memory catalog is used, all objects are only available for the lifetime of the session.