Pradumna Milind Panditrao

Web scraping: It is a data mining or data extraction process in which data from different websites is extracted and stored into a local system or database. Web scraping is also known as crawling or spidering.

Web scraping can be done with the help of programming and using small pieces of codes/functions which are known as scrapers.

Behavioral patterns offer repeatable solutions to commonly occurring problems. It involves the following methods:
Iterators
Observers
Templates
Visitors
Commands