How to install MySql on MacOs X

I think there is an error in the installation because all the tables MySql needs are not created. In order to solve this problem open a shell and execute the following commands:

cd /usr/local/mysql/data
ls -l

If this directory doesn't contain any table (MYD, MYI, frm file) type:

./scripts/mysql_install_db -force
chown -R mysql.mysql ./data
chmod 0577 ./data

and try to launch again mysqld_safe.
If it doesn't start open the file (servername).err. In this file You find messages and errors.