can i use mysqldump in sql file code example

Example 1: mysql dump mysql db cli

#note by specifying -p flag without a password it'll prompt you for pass

DUMP:
mysqldump -u username -p dbname --lock-tables=false > filename.sql

Import:
mysql -u username -p dbname < filename.sql

Import external:
mysql -h host -u username -p dbname < filename.sql

Example 2: database dump mysql command

mysqldump -u username -p dbname > filename.sql