installing mysql on mac - two directories query.

[O P]

hello,

I'm new to MySQL and databases. I'm trying to get to grips with the deeper structure and I'm confused about why there are apparently two locations after installing MySQL and I was hoping someone could clarify what each is for?

I have this:

/usr/local/mysql-5.7.17-macos10.12-x86_64/

and this:

/usr/local/mysql/

Why are there two mySQL related directories in the local folder? In terminal access the database by doing this to login: cd ./usr/local/mysql/bin and then typing: mysql -u root -p 'password'.

However if the database is stored in the data folder and everything apparently seems to be happening in the /usr/local/mysql folder, what is this for:/usr/local/mysql-5.7.17-macos10.12-x86_64/

It's been bugging me for a day now and I've not been able to find anything online other than the bottom of this URL: https://dev.mysql.com/doc/refman/5.6/en/osx-installation-pkg.html
, which doesn't really make sense to me

thanks for your help! :)