During this step, it's important to identify the relevant data that needs to be extracted and determine how it will be accessed.įor example, a company might want to extract data from their sales database to analyze customer buying patterns. The data can be in a variety of formats such as CSV, XML, JSON, or Excel. This can involve reading data from databases, flat files, web services, or other data sources. The first step of the ETL process is to extract data from the source system. Let's take a closer look at what happens in each of these steps: Extract
It involves three main steps: extract, transform, and load. ETL (Extract, Transform, Load) is a crucial process that enables organizations to extract data from various sources, transform it into a useful form, and then load it into a data warehouse system for further analysis.
