where is the index table gone

I have created a table called Student and added recorded to them.
Then i created index for student table.
i use this

I am using MySql ,I can't fine any new table still.
I heard that when we creating indexes it creating a new table.

I heard that when we creating indexes it creating a new table.

Where did you hear this?

I went to an interview,They said when we making indexes it creating a hash value for colum and it creates a new table and save it in that table.

I'd read a primer on database indexes (ask Google). Some systems offer meta-data tables that contain information about the indexes, but aren't actually the index. For example, in some software creating an index would add a line to a table to show the existence of the index. But this is purely representational.

anyway can anyone give me good tutorials for databse indexing ,I search google still not found good one.
I am using MySql Server.

http://en.wikipedia.org/wiki/Index_%28database%29