I have more then 5 Years of experience in field of data scrapping , managing with no error by using many tools and many time i write a script by using language like PHP | PERL | PYTHON | NODE JS | XPATH etc , and for storing the data by using MYSQL | EXCEL | CSV | NOTEPAD and many ways as per requirement . And for checking for accuracy of i have use many tools that are already available and also knowledge of NOTEPAD++ | EDITPLUS etc to check accuracy and deliver correct and error free data.