software testing

Beginners Guide to ETL Testing What is ETL Testing? These days more and more systems are moving from legacy to new technology, and ETL is one of the common methods used to help this transformation. It can consolidate the scattered data for any organization while working with different data format and sources. In this article, we will talk about the basic concept of ETL and how it has been tested. Why we need ETL? ETL stands for extract, transform, and load. In many organizations, the setup of the IT deferments happened long time back. So, in most of the cases the way each deferment handles the data is different. For example, in a retail organization you many have different departments such as sales, marketing, logistics, etc. Each of them is handling the customer information but way they store that data could be quite different. The sales deferment store it by name whereas marketing deferment has it in the number format. ETL can take all this data from different sou...