Check out example codes for "mysql dump specific tables". It will help you in understanding the concepts better.

Code Example 1

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

#dump specific files to a SQL file
mysqldump -u userHERE -p --lock-tables=false database_name table1 table2 table3 > mydb_tables.sql

#if you want to import a file into the data use this
mysql -u userHERE -p database_name < file.sql

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