Q: 12
Which file format is used for storing Delta Lake Table?
Options
Discussion
Option A. Under the hood Delta Lake tables are stored as Parquet files, just with extra metadata and transaction log. Pretty sure about this, seen it in official guide and labs.
A tbh, Delta Lake adds features but the actual files on storage are still Parquet. The "Delta" part is mostly about the transaction log and metadata. Anyone disagree or see a case where that's not true?
Wow Databricks and their naming, always trips people up. It's actually A, since Delta Lake tables store data as Parquet files under the hood. Makes sense if you've looked at the filesystem. But I get why B looks tempting.
Its A, the trap here is B since you work with 'Delta' tables in Databricks but the underlying storage is Parquet files. I've seen similar wording in practice exams, always points to Parquet as actual file type. Could be confusing if you only think about what users see. Let me know if anyone thinks otherwise!
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