Database Account Security

To ensure that RDS MySQL databases run properly and prevent account information from being deleted by mistake, DAS hides the following accounts of MySQL database users.

**Table 1** Accounts to be hidden
Account	Description
mysql.session@localhost	Internal database account configured in MySQL 5.7 or later.
mysql.sys@localhost	Internal database account configured in MySQL 5.7 or later.
mysql.infoschema@localhost	Database account.
root@%	Account configured when you create an RDS MySQL instance.
rdsAdmin@localhost	Management account, which has the highest superuser permission and is used to query and modify DB instance information, rectify faults, as well as migrate and restore data.
rdsBackup@localhost	Backup account, which is used to back up background data.
rdsMetric	Metering account, which is used by watchdog to collect database status data.
rdsRepl	Replication account, which is used to synchronize data from primary DB instances to standby ones or read replicas.
rdsProxy	Proxy account, which is used for authentication when the database is connected using the read/write splitting address. This account is automatically created when read/write splitting is enabled.
drsFull	Account added to the destination database when you start a full migration task.
drsIncremental	Account added to the destination database when you start an incremental migration task.