Explanation:
The fundamental difference lies in data independence. A Shallow Clone (also known as a pointer clone) creates a new table entry that points to the source table's existing data files, making it fast and cost-effective for short-term testing. A Deep Clone creates a complete, separate copy of the data and metadata, meaning any changes or deletions in the source table do not affect the deep clone.
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In Databricks Delta Lake, what is the primary distinction between a Shallow Clone and a Deep Clone?
A
Shallow clones are read-only versions of a table used for reporting, whereas deep clones are fully mutable copies.
B
Shallow clones copy only the table metadata and reference the existing data files, while deep clones copy both the metadata and the underlying data files to create a fully independent table.
C
Shallow clones only replicate the schema definition, while deep clones replicate the schema and the metadata but omit the data files.
D
Shallow clones utilize the transaction log for faster processing, whereas deep clones bypass the log to copy physical files directly to avoid overhead.
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