Databricks Data Engineer Associate Question 241
Select 3You are designing a data pipeline in Databricks, and your team needs to differentiate between data and metadata to organize your Delta Lake tables effectively. Which of the following correctly distinguishes data from metadata in this context?
- A
Data refers to the actual records stored in the table, while metadata provides information about the structure and properties of the table.
- B
Metadata includes information like schema definitions, table properties, and partition details, while data includes the rows and columns stored in the files.
- C
Metadata is stored only in Databricks' control plane, while data is stored in the cloud storage layer.
- D
Data represents the business insights derived from the dataset, whereas metadata determines the permissions and access controls for the dataset.
- E
Metadata can include details such as timestamps of updates and transactional history for Delta Lake tables, while data comprises the actual content stored in these tables.
Show answer and explanation
Correct answers: A, B, E
Explanation
The distinction between data and metadata is critical in managing Delta Lake tables in Databricks. Data represents the actual records stored in the table, while metadata provides essential information about the structure, schema, and various properties of the table. Metadata also includes transactional details and audit history in Delta Lake, enabling features like time travel and version control.
- A. Correct.
Correct. Data refers to the actual content stored in the table (raw records), while metadata describes the structure and properties of the table such as schema and partitions.
- B. Correct.
Correct. Metadata includes schema definitions, table properties, and other structural details, whereas data refers to the actual records stored in the files.
- C. Incorrect.
Incorrect. Metadata is not restricted to Databricks' control plane; it is often stored alongside the data in Delta Lake tables (e.g., in transaction logs).
- D. Incorrect.
Incorrect. While metadata may assist in managing permissions and access controls, this is not its primary role; it mainly describes the structure, schema, and properties of the dataset.
- E. Correct.
Correct. Metadata in Delta Lake includes transactional details, audit history, and schema evolution, which are separate from the actual data stored in the table.