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What is time travel (querying historical table versions) in a lakehouse/warehouse?

Modern table formats let you query a table as of a past version or timestamp, the backbone of reproducibility, audits, and recovery. The signal is the versioned-snapshot mechanism and where it breaks.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Modern table formats let you query a table as of a past version or timestamp, the backbone of reproducibility, audits, and recovery. The signal is the versioned-snapshot mechanism and where it breaks.

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