Question

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A Search engine which searches the database.
of other corawler-based search engines is called a​

Answer 1

Answer:

Meta Search Engine

Explanation:

Meta search engines are ones that search several other search engines at once and combines the results into one list. While you get more results with meta search engines, the relevancy and quality of the results may sometimes suffer. Dogpile and Clusty are examples of meta search engines.