Explanation:
In Databricks, a "Managed Table" is one where both the underlying data files and the metadata (schema, properties) are managed by the Databricks platform. When you drop a managed table, the underlying data files are also deleted. By contrast, for external (unmanaged) tables, Databricks only manages the metadata, and dropping the table leaves the underlying files intact.
A
Databricks only manages the metadata; files are external.
B
Files are kept only in active cluster memory.
C
Databricks manages both the data files in storage and the metadata in the metastore.
D
The table schema is fixed and cannot be evolved.
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