SEARCHING : Search engine??

• A search engine is a computer program that does the following:


- Allows user to submit a query that consists of a word/ phrase.
- Searches the database.
- Returns a list of suitable URLs which match your query.
- Allows user to revise and resubmit.

SEARCHING : Metasearch Engines

• A metasearch or all-in-one search engine performs a search by the use of more than one other search engine to complete the search job.

• The duplicate retrievals are eliminated.

• The results are ranked according to how well they match with the query.

• Advantage:


- A single query can access lot of search engines.

• Disadvantage:


- Allows user to submit a query that consists of a word/ phrase.