Computer robot programs, referred to sometimes as "crawlers" or "knowledge-bots" or "knowbots" that are used by search engines to roam the World Wide Web via the Internet, visit sites and databases, and keep the search engine database of web pages up to date. They obtain new pages, update known pages, and delete obsolete ones.
Program robot komputer, sering disebut dengan istilah crawler atau bot. Digunakan search engine untuk menjelajah web, mengunjungi situs-situs internet dan databasenya, dan memperbaharui database halaman web-halaman web di search engine. Spider mengumpulkan halaman baru, memperbaharui halaman yang telah terdata, atau menghapus halaman yang sudah kedaluarsa.
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