Difference Between ETL and Database Testing

ETL is a process that gathers and transforms various kinds of data. Once the data transformation is over, ETL sends the data over to the data warehouse. With ETL, you can move multiple pieces of data all across different sources, locations, and evaluation tools. It is why ETL has become a force to reckon with when it comes to business intelligence. ETL has become more extensive and effective when it comes to executing data management strategies.

On the other hand, database testing has multiple plane procedures that include the plane for data access, the plane for business, the database plane, and the plane for the user interface. The plane for the user interface is the structure of the database interface, while the plane for the business consists of the database that aids business protocols and procedures.

What are ETL and ETL Testing?

ETL stands for Extract, Transform and Load. It is a process where you copy data from various data sources to a particular data destination. ETL can be used for the following:

Three Components of ETL Process Flow Model

Three Components of ETL Process Flow Model

Three Components of ETL Process Flow Model

  • Extraction of data: This process involves data extraction from different sources.
  • Transformation of data: This process involves transforming data into the proper format that is stored in a data warehouse.
  • Loading of data: This process explains how data is inserted into the targeted data warehouse.

ETL testing is a data validation technique that allows data to move from one source to one data destination.

Benefits of ETL

  • ETL Uses Data to Make a Single View: Managing various kinds of data takes time and effort. It is why ETL testing tools can combine a data warehouse with several types of data to create a single view.
  • ETL Makes Room for More Productivity and Efficiency: ETL is just like the automated version of hand-coding data transfer. It is why developers now can create more technological advancements without putting too much stress into writing codes.

What is Database Testing?

Database testing is the checking of your database to see that it is in order. This includes things such as schema, tables, and triggers – all under controlled conditions for accurate results. Another interesting fact about data testing is that it also provides checking of data consistency and integrity.

Importance of Database Testing

An application’s validity can be jeopardized, resulting in enormous financial losses that might bring the company to its knees. From more minor data attributes like the number of retweets on a tweet to the actual worth of assets on a trading platform, the intensity of these effects can vary greatly. There are some data thefts and integrity breaches that database testing cannot avoid, but the worst effects are minimized by examining the database system extensively.

ETL Testing vs. Database Testing

We will discuss the difference between ETL testing and database testing in this section for better clarity.

Function Database Testing ETL Testing
Main Goal Data integration and validation Extract, Transform and Load data for BI Reporting
System Applicable A transactional system where business flow occurs A system that contains historical data without being in a business flow environment
Common tools Selenium, QTP, etc. Informatica, QuerySurge, etc.
Business Need It helps with multiple application data integrations. It helps with information, analytical reporting, and forecasting.
Modelling ER method Multidimensional
Type of Database It is normally used in OLTP systems It is applied to OLAP systems
Type of Data Normalized data comprising of more joins De-normalized data comprise of fewer joins, more indexes, and aggregations.

Benefits of DataQ

  • It is a data validation tool that helps companies boost their productivity and efficiency through automation.
  • It can connect to various data sources at the same time.
  • It can integrate different file formats.
  • It is capable of consuming a massive amount of data.


Overall, this article gives you a rundown of the fundamental differences between database testing and ETL testing to enable you to carry out your validation process successfully. Also, things to keep in mind when deciding how much testing you need to do in your areas of expertise and how to plan your testing system so that relevant aspects aren’t missed in the process.