What do Metadata elements typically control in Business Object Management?

Metadata elements play a crucial role in Business Object Management, particularly in defining how data is structured, displayed, and interacted with within a system. When considering the options, the correct answer focuses on how metadata elements influence the form display and behavior.

Metadata provides the necessary context for data elements, defining properties such as layout, visibility, and the types of input allowed for user interfaces. This ensures that when a user accesses a form, the presentation and interaction with the data are consistent and user-friendly. For example, it can dictate which fields are mandatory, how inputs are validated, and the overall arrangement of the form elements, thereby enhancing the user experience.

The other options relate to different aspects of a system: database connections manage how applications connect to databases; user access levels define permissions and security for various users; and data types specify the kind of data that can be stored in a field. While these are important components of a data management system, they do not directly pertain to how forms are displayed and function in relation to the end-user interaction. Therefore, the focus on form display and behavior as controlled by metadata elements is what makes this answer the most appropriate choice.