Databricks Certified Data Engineer - Associate
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Which of the following statements describes Delta Lake?
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KKeng
A
Delta Lake is an open source analytics engine used for big data workloads.
B
Delta Lake is an open format storage layer that delivers reliability, security, and performance.
C
Delta Lake is an open source platform to help manage the complete machine learning lifecycle.
D
Delta Lake is an open source data storage format for distributed data.
E
Delta Lake is an open format storage layer that processes data.
Explanation:
Delta Lake is correctly described as an open format storage layer that delivers reliability, security, and performance.
Key points:
- Delta Lake is NOT an analytics engine (that's Apache Spark) - option A is incorrect
- Delta Lake is NOT a machine learning lifecycle platform (that's MLflow) - option C is incorrect
- While Delta Lake is a storage format, the most accurate description is that it's an open format storage layer with ACID transactions, schema enforcement, and other reliability features - option B is more comprehensive than option D
- Delta Lake doesn't process data itself (that's Spark's role) - option E is incorrect
Delta Lake sits on top of data lakes and provides:
- ACID transactions
- Schema enforcement and evolution
- Time travel (data versioning)
- Unified batch and streaming
- Metadata handling
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