Basics of Web Scrapping
Posted On Saturday, September 4, 2010 at at 1:38 AM by web researchWeb scraping is also known as Web mining or Web data extraction. Web scrapping is the process of extracting relevant information from websites of interest. Web scraping is sometimes compared with web indexing, which indexes and archives web content using crawler applications (BOT). Web scraping techniques converts unstructured web content into structured information that can be stored and analyzed letter for business purpose.
Web scraping is conceptually similar to Screen scraping as it wraps a human interface into a computer software interface. It wraps a website and converts it into an application programming interface. Though it sounds very common but technically it’s quite a distinct and different process altogether.
Web scrapping is not about producing APIs all the time; it also involves conventional approaches that use script languages like Python or Oracle to extract data from static HTML websites. This technique has been quite popular for over a decade, but it poses two challenges: it can not serve to websites with dynamic contents like news, stocks, sports, etc. Also the application simply does not work with latest AJAX powered web pages.
Web scraping offers significant business proposition in rapidly changing networked world. It is frequently used by project managers to deliver efficient and profitable business intelligence.
Web scrapping is widely used for Web research, online price comparison, weather and stock data monitoring, website change monitoring and data collection.
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