Databricks Data Engineer Associate Question 242
Select 3A data engineering team is working on a Databricks Lakehouse platform. They are tasked with managing both data and metadata for a delta table used in an analytics pipeline. Which of the following statements correctly distinguishes between data and metadata in this context?
- A
Data refers to the records stored in the delta table, while metadata refers to information like schema details and table properties.
- B
Data includes details such as column types and constraints, while metadata is the actual content stored in the delta table.
- C
Metadata helps define how to interpret and query the data, while data is the actual content being queried.
- D
Metadata is stored separately from the data in Delta Lake and includes transactional history and statistics for optimization.
- E
Data and metadata are always stored in the same physical location in Delta Lake.
Show answer and explanation
Correct answers: A, C, D
Explanation
Data refers to the actual records stored and processed in a system, while metadata provides descriptive information about the data, such as schema, constraints, and optimization-related details. In Delta Lake, metadata plays a vital role in maintaining consistency, enabling efficient queries, and supporting ACID transactions. Understanding the distinction between data and metadata is crucial for effective data engineering, especially when working with systems like Databricks.
- A. Correct.
Correct. The records stored in the delta table are considered data, while schema details, table properties, and other descriptive information constitute metadata.
- B. Incorrect.
Incorrect. Column types and constraints are part of metadata, not data. The actual content stored in the delta table is the data.
- C. Correct.
Correct. Metadata provides critical information to interpret and query the data, while the data itself is the content being processed.
- D. Correct.
Correct. Metadata in Delta Lake includes transactional history and statistics that are used for performance optimization and consistency checks.
- E. Incorrect.
Incorrect. In Delta Lake, data and metadata can be stored in separate physical locations to support better scalability and performance.