What does an ETL Tester do?
Published 3 min read
An ETL tester is responsible for testing the data that is extracted from various sources, transformed into a desired format, and then loaded into a target database. The tester must have a strong understanding of the data warehouse structure and how the data flows through it in order to effectively test the ETL process.
ETL Tester job duties include:
- Design and implement ETL test plans
- Execute ETL tests and analyze results
- Identify, document, and track ETL defects
- Assist in the development and maintenance of ETL test data
- Support continuous improvement of ETL testing process
- Develop and maintain ETL test automation scripts
- Participate in project meetings and provide input on ETL testing related issues
- Perform root cause analysis of failed ETL tests
- Review requirements and design documents to ensure completeness from a testing perspective
- Work with developers to resolve defects
ETL Tester Job Requirements
An ETL Tester is responsible for testing the data that is extracted, transformed, and loaded into a data warehouse. They work closely with ETL Developers to ensure that the data is accurate and meets the requirements of the business. The ideal candidate will have a strong technical background and experience in data warehousing. They should also be able to effectively communicate with both technical and non-technical staff. A bachelor's degree in computer science or a related field is typically required. Certification in ETL Testing is also recommended.
ETL Tester Skills
- Extract, Transform, Load (ETL)
- Data warehouse
- SQL
- PL/SQL
- Testing tools
- Unix
- Linux
- Windows
- Oracle
- Informatica
- DataStage
Related: Top ETL Tester Skills: Definition and Examples
How to become an ETL Tester
In order to become an ETL Tester, one must first understand what ETL is and how it works. ETL stands for Extract, Transform, and Load. It is a process that is used to move data from one place to another. The data can be moved from a database, file system, or even a web service. The data is first extracted from the source, then transformed into the desired format, and finally loaded into the destination.
ETL Testers are responsible for testing this process to ensure that the data is being moved correctly and that the transformation is being done properly. They will also test the load process to make sure that the data is being loaded into the correct destination. In order to become an ETL Tester, one should have a strong understanding of databases and how they work. They should also be familiar with different file formats and how to transform them.
Related: ETL Tester Resume Example
Related: ETL Tester Interview Questions (With Example Answers)