Search Engine

On the internet,a search engine is a coordinated set of programs that included.

• A program that creates a huge index from the pages that have been read.
• A program that receives search request,computer it to the entries in the index,and returns result. 
• A spider that goes to every page or representative pages on every web site that wants to be searchable and reads it, using hyper text links on each page to discover and read a sites other pages