$charset public property The charset used for database connection

useMaster() public method Executes the provided callback

EVENT_ROLLBACK_TRANSACTION event of type \yii\db\Event An event

$enableSlaves public property Whether to enable read/write splitting

$schemaMap public property Mapping between PDO driver names and

cache() public method Uses query cache for the queries

$username public property The username for establishing DB connection

$driverName public property Name of the DB driver

openFromPool() protected method Opens the connection to

getSlavePdo() public method Returns the PDO instance for