What Is ETL Testing?

ETL stands for extraction, transformation, and loading. It is sometimes called data storage. ETL is a storage management process data. It comprises three steps:

Extracting data from external sources;

The transformation of information and cleaning the business model to respond;

Shipping to the database.

ETL is one of the most important parts of any company, modern enterprise, especially for companies that are always looking for the next level of improved technology and therefore closely related to computers. Today's data is very large files. Therefore, managers find ways to make the right maintenance while being easy.

It is not always easy to create an effective database that contains reports, documents, and historical data. Today, most of the information is stored and processed in a cloud or in real time. The dividing line between the old data and data simply disappears tomorrow.

Larger companies with dozens of departments require complex ETL testing. By conducting data tests, specialists should check the time during which the data loaded into the data warehouse will ensure scalability and performance. In addition, it is important that the ETL warning system checks incorrect data and be able to override the default argument or rejection if necessary. Testers must verify that the data is correct in accordance with the set guidelines process.

Datastore tests include the following steps:

Familiarization with the requirements and business strategy.

Estimation tests with future planning.

Case studies and test cases.

Approval of test cases and test cases.

Preparation for the test.

An assay according to all criteria.

Write a summary report.

Therefore, think of the process of verifying DB other testing procedures. However, it runs with a variety of data, which also includes databases online analytical processing.

There are different types of data storage tests in the practice of software testing. Consider the most common.

Types of ETL test:

Test ratio - the output data memory tested;

Change Request - the new standard or new data is implemented in the current data warehouse;

Migration test - as compared to the previous database to the new instance after the migrated data is passed through the new system;

New data storage tests - check the new construction DW held on the basis.

Therefore, ETL test is a very important component of any organization that has a deal with many different data.