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A Beginner’s Guide To ETL Testing For 2023

  If you’ re here, I’m sure you’ve heard the term ETL testing used in the realm of data engineering. In my blog today, I want to get you acquainted with the process of ETL testing.    W hat is ETL testing? Testing data for accuracy, integrity, and relevancy is crucial when you want to draw insights. To do so, it is important to process data before leveraging it to make strategic business decisions.    ETL (Extract, Transform, Load) is a three phase process used to collect data from disparate sources and make it user-ready. ETL testing is a ensures that data is properly extracted from its sources, transformed into a usable format, and loaded into its destination. Here’s a step-by-step guide to ETL testing. Understand the ETL process: The first thing to do even b efore you can test ETL processes, it's important to have a good understanding of how data is extracted, transformed, and loaded.     Identify test data: Establish the data that will be used...
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ETL Testing: Architecture, Types and Best Practices

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As promised, I am back with another blog on ETL testing . In my previous blog, I talked about the basics of ETL testing , its working, and its benefits. In today’s blog, I will talk about how to build ETL architecture, types of ETL testing, and its best practices. Without wasting time, let’s get started!    How to Build ETL architecture?    Establish an ETL architecture by following these steps - Identify your business needs Document data sources by determining the data your ETL architecture will support Identify your target destination to create an efficient architecture Conduct quality checks to determine the problems in your data sets Arrange regular maintenance and improvements    Now that you are clear on how you can build an effective ETL architecture, let's look at the types of ETL testing . Types of ETL Testin g      There are nine ETL tests that you can execute-    Data Quality Testing      It runs syntax t...
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