I need your valuable suggestions for research topic in mysql.
Topic should have practical implemenatation part.
There are a coluple of free sample databases out there that should give you food for thought,
Sakila, Northwind and others.
You're doing research, and you are asking for a topic on a web forum???
Speed comparision mysql vs oracle on a 100,000,000 row table, with and without indexes
The internal file structure of mysql vs oracle - a comparative study.
Advantages and disadvantages of mysql over oracle and access as a desktop system.
Conversion of mysql into a GIS
Efficiency of the mysql query optimiser (and optionally, compared to other systems)
Speed and efficiency of a mysql distributed database.
A better query optimiser for mysql.
When is it worth using an InnoDB or MyISAM or Aria, based on data types, and database size.
A comparitive study of mysql vs InfiniDB vs XtraDB - which user scenario suits each engine.
Well, you did ask for a research topic, didn't you.