The document summarizes the major components of how a search engine works: crawling, indexing, and retrieval. Crawling involves using bots to collect data from websites and store it in a database. Indexing organizes and sequences the crawled data for faster searching. Retrieval uses keywords and SEO to accurately resolve ambiguities and return relevant results to users from the indexed data. Search engine optimization helps users find the best results.

1. Working of Search Engine
Deepak Singh
Pawan Singh
Saurabh Singh
Shubham Vishwakarma
Presented By:

2. INDEX
1. Introduction
2. Proposed Architecture
3. Implementation / Testing
4. Results and Discussion
5. Conclusion

3. Introduction
• Search Engine is a program that identifies your query and gives you an
optimized result for it.
• There are many search engines already existing in market and have
different types of query processing algorithm.
• Some work with the “keywords”, some with “questions you ask”, some with
combination of these two.
• Working can be explained in 3 majors namely crawling, indexing, retrieval.
• Each of these majors has its own importance and needs to work in co-
ordination with each other.
• SEO is one of the important factor for a successful website, to get
recognized by the search engine.

4. Indexing
Retrieval

5. The 3 majors of Search Engine
1. Crawling
It is basically collecting data or hunt many similar data
simultaneously for a particular result.
Many search engines uses their bot/spider for this purpose.
Crawling without bot/spider would have become very difficult as
it would lead to hand picking of data.
A bot goes to each and every link of any website and check its
existence and copies this information into a database for next
retrieval.
Search Engine crawls few thousands links per second and stores
record into its database.

6. 2.Indexing
As search engine generate lots of data every second it needs to be
stored in some easy to use form.
This work is made easy by indexing.
As the data is ready to store, first it is identified the type of data then
the existing similar data is checked.
After that the data is indexed in some sequential fashion in co-
ordination with the existing.
Through indexing any data can be searched quickly and thus giving
faster access.

7. 3. Retrieval
It is the most complex of all 3 majors.
While retrieving data, search engine might give many similar results.
As the search engine needs to be accurate, it itself needs to solve this
ambiguity problem.
Data retrieval is commonly done by using popular keywords.
Data retrieval is also linked with SEO.
Once the data is retrieved it is returned to the user.

9. Search engine optimization

10. Conclusion
Working of a search engine is a complex and very busy job. It works in a
very systematic, sequential and efficient manner. Every time it needs to
take load of thousands of millions of user query and make sure that
correct result of the query is returned back. Search engine optimization
helps the user to choose the best result from the list of results.

11. THANK YOU