DEA-C01 Question 212
Select 4Your company uses AWS Glue Data Catalog to manage metadata for various datasets. You are tasked with ensuring that the data catalog contains comprehensive metadata to facilitate data discovery and governance. Which components of a metadata catalog should you focus on adding or verifying?
- A
Database and table definitions
- B
Column data types and schemas
- C
ETL job execution logs
- D
Partition information for datasets
- E
Access control policies for datasets
- F
Data lineage and transformation history
Show answer and explanation
Correct answers: A, B, D, F
Explanation
A metadata catalog, such as AWS Glue Data Catalog, is designed to store and manage metadata about datasets, including database and table definitions, column schemas, partition information, and data lineage. These components enable efficient data discovery, governance, and querying. While access control and ETL logs are important, they are not core components of the metadata catalog but instead pertain to other aspects of data management and operations.
- A. Correct.
Database and table definitions are fundamental components of a data catalog, as they provide structural information about datasets.
- B. Correct.
Column data types and schemas are essential for describing the structure and format of the data, enabling accurate querying and analysis.
- C. Incorrect.
ETL job execution logs are operational data and not typically part of the metadata catalog itself, though they may be stored separately for monitoring purposes.
- D. Correct.
Partition information for datasets is critical for optimizing query performance and ensuring easy access to specific subsets of data.
- E. Incorrect.
Access control policies are part of security and management but not a direct component of the metadata catalog.
- F. Correct.
Data lineage and transformation history provide insights into the origin and changes made to the data, which are often stored in a metadata catalog to support governance and traceability.