In my website, I am using MySQL database. I am using a webservice where in I do all my database related manipulations.
Now In one of the methods of that webservice,
You need to grant SELECT permissions to the MySQL user who is connecting to MySQL. See:
http://dev.mysql.com/doc/refman/5.0/en/privilege-system.html
http://dev.mysql.com/doc/refman/5.0/en/user-account-management.html