etl testing training in Madhapur hyderabad

Our ETL testing training program in Hyderabad covers comprehensive topics such as ETL testing, certification, data testing, specialized courses

1. ETL TESTING
Presenter name: Neeraja Chintala
Email: [email protected]
Website address: www.3zenx.com

2. Tables of contents
•What is ETL Testing?
•When do we need ETL Testing?
•Challenges in ETL Testing
•Types of ETL Testing
•Advantages of ETL Testing
•Importance of ETL Testing
•Conclusion

3. What is ETL Testing?
•ETL testing stands for Extract, Transform, and Load testing. It
is a process of validating and verifying the correctness and
completeness of data during the ETL process.
• ETL testing is crucial because it ensures that data is accurately
extracted from the source, correctly transformed to meet
business rules, and loaded into the target data warehouse or
database without errors.

4. When do we need ETL Testing?​

•ETL is commonly associated with Data Warehousing projects
but in reality any form of bulk data movement from a source
to a target can be considered ETL. Large enterprises often
have a need to move application data from one source to
another for data integration or data migration purposes. ETL
testing is a data centric testing process to validate that the
data has been transformed and loaded into the target as
expected.

5. Challenges in ETL Testing​

ETL Testing is different from application testing because it
requires a data centric testing approach. Some of the challenges
in ETL Testing are
•ETL Testing involves comparing of large volumes of data
typically millions of records.
•The data that needs to be tested is in heterogeneous data
sources (eg : databases, flat files).
•Data is often transformed which might require complex SQL
queries for comparing the data.
•ETL testing is very much dependent on the availability of test
data with different test scenarios.

6. Types of ETL Testing
•Metadata Testing
•Data Completeness Testing
•Data Quality Testing
•Data Transformation Testing
•ETL Regression Testing
•Reference Data Testing
•Incremental ETL Testing
•ETL Integration Testing
•ETL Performance Testing

7. Advantages of ETL Testing
•good for bulk data movements with complex rules and
transformations.
•make maintenance and traceability much easier than hand-
coding .
•good for data warehouse environment.

8. Importance of ETL Testing
•ETL Testing holds great significance in the process of data
warehousing and data migration as it validates the efficient
loading of data from the source system to the data warehouse.
• It provides a consolidated view of the data to the enterprises,
thereby enabling them to push better business decisions.
•It helps in Identifying Problems with the Source Information.
•Prevents Loss of Data and Duplication of Records.

9. CONCLUSION
•ETL Testing is a critical testing procedure for Data
Warehousing projects since it helps to build, control, and
protect integrated or migrated data. The ETL Testing process
validates, verifies, and qualifies data in order to avert data
loss and duplicated records.
• ETL Testing is gaining importance in the present times since
Agile, DevOps, Artificial Intelligence, and Cloud Technologies
are fast emerging as the top trends in software development
industry.