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Hi friends, welcome to Octoparse! Today we are going to talk about data extraction. Although data extraction is not a new phrase any more in the era of big data, there are still some people who arent familiar with it and sometimes are confused with it. In todays video, you will learn what data extraction is, why we need it and the data extraction tool. What is data extraction? Data extraction is the process or act of capturing data that is either structured or unstructured and turning the raw data into analyzable or table style formats. However, we should notice that it doesnt refer to the process or analysis that might take place after the data extraction itself. In short, data extraction is the act of taking data from one source and transferring it to another. So what type of data can be extracted? Typically, there are two ways we can categorize data. 1) We can categorize data into structured data and unstructured data. 2) Or, we can classify data into digital data and physical d