Final answer:
It is true that most OO database systems support both objects and literals. Objects represent data with associated behavior, while literals are simpler values without behaviors. An OO database can manage a variety of complex real-world entities combining objects and literals.
Step-by-step explanation:
It is true that most Object-Oriented (OO) database systems allow for the representation of both objects and literals. Objects in an OO database are instances of classes that encapsulate both state (data) and behavior (methods). Literals, on the other hand, are simple or complex values that do not have behaviors associated with them, such as numbers, strings, or even large text blocks and structured types. These literals can be the values of an object's properties or can exist independently within the database.
In an OO database, one might encounter complex objects that contain other objects, literals, or a combination of both. This flexibility allows for a rich representation of real-world entities and their relationships, which can be managed and manipulated using object-oriented principles and queries.