MySQL :: Create user

To create user

mysql> create user <username> identified by '<password>'

Then grant privileges

mysql> grant select, insert, update, delete, create, drop on <database_name>.* to '<username>'@'<mysql_host>';

or 

mysql> grant all privileges on <database_name>.* to '<username>'@'<mysql_host>';

MySQL :: Backup and Restore

To backup the database

$ mysqldump -u user -p backup.sql

or To backup specific tables from the database

$ mysqldump -u -p [table1 table2 ..] > backup.sql

or To backup set of databases

$ mysqldump -u user -p --databases [database_name database_name ..] >backup.sql

or To backup all databases

$ mysqldump -u user -p --all-databases > backup.sql

or To backup only the structure of the MySQL database, with no data

$ mysqldump -u user -p --no-data --databases [..] > backup.sql

or To zip the MySQL data

$ mysqldump -u user -p --all-databases | gzip > backup.sql.gz

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To restore a database from backup.sql

$ mysql -u user -p < backup.sql

To restore all databases from backup.sql

$ mysql -u user -p < backup.sql

or Restore from a conpressed file

$ gzip | backup.sql.gz > mysql -u user -p