Which of the following issues is a concern that a database administrator may face when...

When separately operated applications are integrated, a major concern is whether data integrity will be maintained across systems. Integration may introduce mapping errors, inconsistent data definitions, duplicate records, incomplete transfers, synchronization failures, or processing conflicts. The number of users may increase or decrease, but that is not the central database concern. Initial cost may rise, but cost is less important than whether data remain complete, accurate, and consistent. Security protocols may affect productivity, but this is not the primary issue for the database administrator during integration. Internal audit should evaluate interface controls, reconciliations, data mapping, exception handling, master data governance, and access controls. Therefore, Option A is correct.