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Explain Kafka messaging guarantees and Snowflake schema evolution.

SQLeasy0.4 min readPremium
Frequency
Low
Asked at 1 company
Category
487
questions in SQL
Difficulty Split
130E|271M|86H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Apple
Key Concepts Tested
snowflake
Expert AnswerPremium
72 wordsInterview-ready
**Architectural Logic**: Kafka guarantees affect consistency; Snowflake evolution affects compatibility. **Kafka**: At-most-once, at-least-once, exactly-once (idempotent producer + transactional commits). Exactly-once requires read_committed. **Snowflake Evolution**: Additive columns; VARIANT for flexible; new columns with defaults. **Integration**: Kafka→Snowflake via connector or Snowpipe; schema registry for Kafka; validate compatibility....
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