The correct answer is: A. Facts or Data
A frame is a data structure that represents a real-world object. It consists of a set of slots, each of which contains a fact or piece of data about the object. For example, a frame for a person might have slots for name, age, address, and phone number.
Procedures and default values are not part of the frame structure. Procedures are instructions that tell the system how to manipulate frames. Default values are values that are used for slots if no other value is specified.
Frame names are used to identify frames. They are not part of the frame structure itself.
Frame reference in hierarchy is a way of organizing frames in a hierarchy. It is not part of the frame structure itself.
Here is a more detailed explanation of each option:
- Facts or Data: Facts or data are the basic building blocks of a frame. They are the information that is stored in the slots of a frame. For example, a frame for a person might have slots for name, age, address, and phone number. The values in these slots would be the facts or data about the person.
- Procedures and default values: Procedures are instructions that tell the system how to manipulate frames. For example, a procedure might tell the system how to add a new frame to a database, or how to delete a frame from a database. Default values are values that are used for slots if no other value is specified. For example, if a frame has a slot for age, the default value might be 0. This means that if no other value is specified for the age slot, the system will use the value 0.
- Frame names: Frame names are used to identify frames. They are not part of the frame structure itself. For example, a frame for a person might have a name of “John Doe”. The name of the frame is used to refer to the frame in the system.
- Frame reference in hierarchy: Frame reference in hierarchy is a way of organizing frames in a hierarchy. It is not part of the frame structure itself. For example, a frame for a person might be a child of a frame for a family. This means that the person is a member of the family.