Question 1

Your data engineering team is building a 'Lakehouse' architecture using Azure Databricks.

They need a storage format that supports ACID transactions, scalable metadata handling, and unifies streaming and batch data processing. It must also allow them to perform 'time travel' queries to view previous versions of the data.

Which data format should you recommend?

Accepted Answer

Keywords: 'ACID transactions', 'time travel', 'Databricks'. This defines the Delta Lake format.

Question 2

What mistakes do candidates make on this AZ-305 question?

Accepted Answer

Choosing Parquet. Delta Lake *uses* Parquet files under the hood, but Parquet alone does not provide ACID transactions.

How to approach this question

Full Answer

Common mistakes

Practice the full Azure Solutions Architect Expert AZ-305 Practice Exam 4

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