Which of the following is true about objects and/or classes in a database?

Which of the following is true about objects and/or classes in a database?

• A class encapsulates only data
• A class is an instance of an object
• An object encapsulates only data
• An object is an instance of a class 

EXPLANATION

An object is an instance of a class, and may be called a class instance or class object; instantiation is then also known as construction. Not all classes can be instantiated – abstract classes cannot be instantiated, while classes that can be instantiated are called concrete classes.