How to connect mysql database with wordpress software? please give me steps to connect DB.
thanx 
try to go through http://codex.wordpress.org/Editing_wp-config.php
Let me know if you don’t understand anything or are struck somewhere.
Cheers!
actually its very easy. set your MySQL database up on your hosting service and get the user name, database name and password. then open your wp file folder and find the file called “wp-config-sample”. You will then see place where it asks you for information (around line 19) from your MySQL database like the user name and password that was given to you once you set it up. Whatever else it asks can be found with the information given to you by your hosting service after setting it up. You’ll want to scroll down and get your salts to help avoid hackers. There is a link given in the code. just go there and paste the new salts given to you. Once finished save the file as “wp-config.php” and then upload all your files with your ftp.
oh and once you save the new file you dont need to upload the old file…