Want to be a Database administrator

A personal database is typically maintained by the individual who owns it and uses it. However, corporate or enterprise-wide databases are typically important enough and complex enough that the task of designing and maintaining the database is entrusted to a professional, called the database administrator (DBA).

The DBA is responsible for many critical tasks:

• Design of the Conceptual and Physical Schemas - Based on the user's requirment, the DBA must design the conceptual schema (decide what relations to store) and the physical schema (decide how to store them).
• Security and Authorization: The DBA is responsible for ensuring that unauthorized data access is not permitted
• Data Availability and Recovery from Failures: The DBA must take steps to ensure that if the system fails, users can continue to access as much of the uncorrupted data as possible.DBA is responsible for implementing procedures to back up the data periodically and maintain logs of system activity (to facilitate recovery from a crash).
• Database Tuning: Users' needs are likely to evolve with time. The DBA is responsible for modifying the database, in particular the conceptual and physical schemas, to ensure adequate performance as requirements change.