How to dump only the MySQL database structure?
if you are using MySQLdump and specify  location will be inside the directory you specified for example:

mysqldump  -u root -d  -P port -p password databasename &gt; c:\dumpfile.sql


the dump location will be inside your machine under C drive

but if you did not specify  the directory the dump location will by inside MySQL\bin

mysqldump -u root -d -P port -p password databasename &gt; dumpfile.sql