How do you rate yourself on the grade?

Self-assessment by grade is a subjective process that should be based on objective criteria and experience.

For a middle level in DBA, the expectations typically include:

• Confident proficiency in core RDBMS (e.g., PostgreSQL, MySQL, Oracle).
• Experience in configuring, monitoring, and optimizing database performance.
• Knowledge of data backup and recovery.
• Understanding of database architecture and transaction principles.
• Ability to work with indexes, query execution plans.

If you confidently perform these tasks, can solve typical problems, and are ready to take responsibility for the stability and performance of the database, then your level corresponds to middle.

It is also important to be open to learning and development, as DBA is a constantly evolving field.