What line in Alt-Sets denotes the type of values to be stored in the database?

The line in Alt-Sets that denotes the type of values to be stored in the database is referred to as the Content Kind. This element is crucial in defining what kind of data will be associated with the entries, such as text, numeric values, or other data types. By specifying the Content Kind, users ensure that the database efficiently organizes and retrieves the appropriate information, aligning with the nature of the data being input or processed.

The other elements, such as Sequence Number, Label, and ALT Set, serve different purposes within the structure. Sequence Number typically indicates the order of entries, Label provides a descriptor for easier identification of the data, and ALT Set defines alternative sets of the data, but none of these directly categorize the type of values being stored in relation to what Content Kind does. Thus, Content Kind stands out as the right answer for denoting the nature of the values in a database.