What is ETL data warehouse testing?
What is ETL data warehouse testing?
ETL — Extract/Transform/Load — is a process that extracts data from source systems, transforms the information into a consistent data type, then loads the data into a single depository. ETL testing refers to the process of validating, verifying, and qualifying data while preventing duplicate records and data loss.
What are ETL Tester responsibilities?
As a Data Test Engineer / ETL Tester, you will be responsible for validating data sources, extracting data applications of transformation logic and uploading data in target tables. You will be responsible for designing, testing, and troubleshooting the client’s data storage system before it goes live.
What is difference between data warehouse and ETL testing?
ETL testing is a sub-component of overall DWH testing. A data warehouse is essentially built using data extractions, data transformations, and data loads. ETL processes extract data from sources, transform the data according to BI reporting requirements, then load the data to a target data warehouse.
What are the skills required for ETL testing?
7 Skills Every ETL Developer Should Have
- ETL Tools/Software. ETL Developers obviously need a tool to develop on.
- SQL. SQL, or Structured Query Language, is the lifeblood of ETL as it is the most popular database language.
- Parameterization.
- Scripting Language.
- Organization.
- Creativity.
- Debugging/Problem Solving.
What is the future of ETL tester?
Future of ETL Testing As DevOps extends to cloud-based data processes and environments, there is a demand for automated data integration with ETL testing tools that can produce substantial quantities of data independently without looking for human interference in real-time.
Is ETL testing difficult?
Because traditional ETL processes are highly complex and extremely sensitive to change, ETL testing is hard.
Is ETL testing manual testing?
Tons of planning are involved and a tester should have an intimate knowledge of how this particular pipeline is designed and how to write complex test cases for it. This means that ETL testing is mostly done manually, though we will talk about automation tools further in the article.
How do you list ETL on resume?
How do I list etl skills on my resume
- Standardized ETL processes and tools to automate data extraction and manual reporting, reducing 400 man hours across the entire operation.
- Logged 250% efficiency in ETL spec completion time.
- Automated performance tuning to reduce CPU usage by 45%
How do you describe ETL on a resume?
ETL developers deal with large data sets, organizing and preparing them for further analytical work to be done. This often includes designing and troubleshooting various types of data warehousing software.
Does ETL Testing have scope?
The scope of ETL testing is very bright. ETL tools like Informatica PowerCenter, Oracle Data Integrator, Microsoft SQL server integrated service, SAS, IBM infosphere information server, etc. all are in huge demand in the industry because of its demand. The scope of ETL testing will increase in the future.
