Database Administration (DBA): what is the overall responsibility of the DBA in an organization using a DBMS?

Introduction / Context:
The Database Administrator (DBA) is accountable for ensuring that organizational data is accurate, available, secure, and performant. This question asks you to identify the broadest, most accurate statement of a DBA’s role.

Given Data / Assumptions:

• A DBA coordinates across development and operations.
• Responsibilities span design, implementation, security, backup/recovery, and performance.
• DBA work includes facilitating database use and managing life-cycle tasks.

Concept / Approach:
Option (a) captures enablement and support. Option (c) enumerates development, operation, and maintenance. Together, they summarize the complete scope. Merely creating tables (option b) is too narrow.

Step-by-Step Solution:

Verification / Alternative check:
Typical DBA job descriptions include planning, capacity, security, performance tuning, backups, recovery, and enabling development teams—consistent with (a) and (c).

Why Other Options Are Wrong:

• Create and populate tables: a small subset of DBA tasks.
• Only (a) or only (c) alone omit complementary aspects; together they are accurate.

Common Pitfalls:
Equating DBAs with only operational tasks or only development support. In practice, DBAs bridge both worlds.

Final Answer:
Both the first and third answers above are correct.