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ETL Testing: Tips to Becoming a Great ETL Tester!

ETL stands for Extract, Transform and Load. It is a data integration process that combines data from multiple data sources into a consistent data store before loading it into a data warehouse. ETL is capable of collecting vast amounts of data and turning it into business intelligence. It allows a business to derive valuable insights from it and find hidden growth opportunities. In addition, it helps you in making sense of data easily and allows you to compare the new data sets with the old ones to give you historical context. ELT Testing online training also saves a lot of time, cost, and effort by automating the entire process. With this tool, you can focus on your core work while your ETL solution does all the legwork for you. Furthermore, it ensures data usability, consistency, availability, integrity, and security and makes your corporate data accessible to all team members.

Benefits of Conducting ETL Testing Online Training

ETL testing is a data-centric testing process that ensures the data has been transformed and loaded into the target. It improves the quality of data and helps you in making quality decisions. It reduces the chances of data loss by minimizing the risk factors responsible for data loss. Furthermore, it provides timely access to the user at any time. ETL Testing ensures errorless transportation of data from extraction to loading by eliminating the chances of human or system errors. To further know about it, one can visit ETL Testing Online Training. Given below are some of the tasks performed in ETL Testing.

  • Understanding of data
  • Data Model Reviewing
  • Mapping of the source to target
  • Checking the data in the source data
  • Validating the packages and schema
  • Data verification in the target system
  • Verifying aggregation rules and data transformation calculation
  • Comparing Data between the target system and data source
  • Examining quality and data integrity should be examined.
  • Conducting performance testing of data.

Best ETL Testing Tools in 2022

ETL tools are useful in collecting, reading, and migrating data from multiple data structures and across different platforms. These tools come with graphical interfaces that boost the process of mapping tables and columns between source and target databases. In addition, these tools provide various ready-to-use operations such as filtering, reformatting, sorting, and many more. Using the ETL tool is far more beneficial than using traditional methods to move data from a source database to a target data repository. They are easy to use and they eliminate the need for coding in a traditional programming sense. Furthermore, they improve business intelligence by simplifying the process of extracting, transforming, and loading.

ETL tools are GUI based and they allow you to use drag-and-drop interfaces to show the data flow. They help in managing complex data situations by simplifying the tasks and helping with calculations, string manipulation, and data changes. They also provide a wide variety of cleansing functions that help you in dealing with complex transactions that commonly occur in a data warehouse. ETL tools provide a High Return on Investment (ROI) and help a business in generating more revenue. Moreover, they provide various performance-enhancing technologies like cluster awareness, massively parallel processing, and symmetric multi-processing. Given below are some of the leading ETL Testing tools in the market that offer all of these features.

  • Informatica PowerCenter
  • Business Objects Data Integrator
  • IBM InfoSphere DataStage
  • Microsoft SQL Server Integration Services
  • Oracle Warehouse Builder / Data Integrator
  • Pentaho Data Integration
  • Jasper ETL

Tips to Becoming a Great ETL Tester

The primary responsibilities of an ETL tester are staging table/ SFS or MFS, applying business transformation logic, and loading the target table after applying the transformation. They are responsible for testing ETL software along with the test components of the ETL data warehouse. They execute backend data-driven tests and create, design, and execute test cases. they are responsible for identifying the problems and providing solutions to issues. ETL Testers also help in data transfers and testing flat files. Above all, they write SQL queries3 for various scenarios like count tests. Many institutes provide ETL Testing Online Training in India and one can enroll in them to start a career in it. Here are some of the tips that will help you in becoming an ETL Tester

  • Understand source data and emphasize Data Analysis
  • Diagnose the data quality and clean data at its source
  • Create multiple tests for validating data
  • Learn to use ETL tools for supporting your data sources
  • Regularly monitor and apply for relevant ETL jobs.

Conclusion

ETL stands for extract, transform and load and it is a data integration process. This process is useful in understanding data, data model reviewing, mapping the source to target, and many more. ETL tools help in collecting, reading, and migrating data from multiple data structures and across different platforms. Informatica PowerCenter, Business Objects Data Integrator, and IBM InfoSphere DataStage are some of the leading ETL tools in the market.

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Croma Campus is specialized in providing best-in-class IT training and certifications on all popular technologies available globally. We offer several innovative learning methods and delivery models to cater to the unique requirements of a global customer base. We also provide corporate training's on various cutting-edge technologies.

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