Final answer:
The company needs to hire a database administrator to address the challenge of consolidating and storing information from multiple sources while maintaining security and applying upgrades as needed.
Step-by-step explanation:
The small company that is growing quickly into a medium-sized company needs to hire a database administrator to address the challenge of consolidating and storing information from multiple sources. A database administrator is responsible for managing databases, ensuring data integrity, and implementing security measures. They also handle upgrades and ensure that the operations run efficiently by optimizing the database performance.