Final answer:
Database administration is the crucial function within an information systems organizational structure responsible for data control and represents a central point of vulnerability.
Step-by-step explanation:
In an information systems organizational structure, the function of database administration is the central point from which to control data and is also a central point of vulnerability. The database administrator has the critical role of managing, securing, and overseeing the operations of databases, making sure that the data is available to authorized users and protected from unauthorized access. The reporting structure within an organization helps in relaying this information efficiently, answering who, what, when, where, why, and how questions concerning data management.