Bing (search engine) further to 20.9%. As of October 2018, Bing is the third largest search engine in the US, with a query volume of 4.58%, behind Google (77%) and Baidu(14.45%). Yahoo! Search, which Bing largely powers, has 2.63%. Since 2006, Microsoft had conducted a number of tie-ins and promotions for promoting Microsoft's search offerings. These include: Bing's debut featured an $80 to $100 million online, TV, print, and radio advertising campaign in the US. The advertisements do not mention other search engine competitors, such as Google and Yahoo!, directly by name; rather, they attempt to convince users to switch to Bing by
Database search engine Database search engine A database search engine is a search engine that operates on material stored in a digital database. Categories of search engine software include: The largest online directories, such as Google and Yahoo, utilize thousands of computers to process billions of website documents using web crawlers or spiders (software), returning results for thousands of searches per second. Processing high query volumes requires software to run in a distributed environment with redundancy. Searching for textual content in databases or structured data formats (such as XML and CSV) presents special challenges and opportunities which specialized search engines resolve. Databases allow