ETL Testing
(การทดสอบ ETL)
Definition
ETL Testing (การทดสอบ ETL) Hard Skill
ETL Testing involves verifying the accuracy, completeness, and reliability of data extracted, transformed, and loaded from source systems into a data warehouse or target system.
Expertise Level
Level 1
Basic
1. Understands basic ETL concepts and processes.
2. Can execute predefined test cases for simple data validation.
3. Able to identify straightforward data mismatches between source and target.
Level 2
Intermediate
1. Can design and execute complex test cases involving transformations and data accuracy.
2. Validates data completeness and consistency across multiple sources.
3. Identifies and reports common ETL defects and anomalies.
Level 3
Advanced
1. Develops automated ETL testing frameworks and scripts.
2. Performs performance testing and data quality assessments on large datasets.
3. Analyzes root causes of ETL failures and recommends process improvements.
