MySQL Group Replication provides high availability by enabling automatic failover. If a primary node fails, another node in the group can take over without manual intervention.

The NOT NULL constraint ensures that a column cannot store NULL values. It is specified during table creation or when altering the table.

INT is commonly used to store IPv4 addresses by converting them to a numeric format using functions like INET_ATON() for storage and INET_NTOA() for retrieval.

MySQL Enterprise Backup performs physical backups of InnoDB tables by copying the actual data files and log files. This method is faster and more efficient than logical backups for large datasets.

MySQL Enterprise Monitor helps database administrators identify and resolve performance bottlenecks by providing real-time alerts and optimization suggestions based on database activity.