This art is used to make data gathering fast & collectivly automated. Itis also known by other names like Web Data Extraction, Web Content Extraction, Web Harvesting, Web Data Grabbing, Web Data Mining and Screen Scraping.
Web scraping refers to getting information from many of websites from the internet, and condense it into a singular source. Scraping literally means scratching, and that’s what is actually done in web scrape.
The web Crawling normally refers to deal with large Sets of data that crawl the deepest of web pages .Crawlers may used to convene specific data from web pages.