Explanation: The memory address of a variable can be statically bound to the variable at compile time or dynamically at runtime. Likewise, variables in some languages have dynamic types that change during program execution, while other variables have static types that remain fixed over the execution of the program. Only the binding of the value determines whether the object is a variable or something else (such as constant). 9) Which of the following statements about Persistence is correct?
A. It is the enforcement of the class of an object, such that objects of different types may not be interchanged, or at the most they may be interchanged only in very restricted ways.
B. It is the property of an object through which its existence transcends time and/or space.
C. It is the property that distinguishes an active object from one that is not active.
D. All of the mentioned
Answer:A
Explanation: The memory address of a variable can be statically bound to the variable at compile time or dynamically at runtime. Likewise, variables in some languages have dynamic types that change during program execution, while other variables have static types that remain fixed over the execution of the program. Only the binding of the value determines whether the object is a variable or something else (such as constant). 9) Which of the following statements about Persistence is correct?
A. It is the enforcement of the class of an object, such that objects of different types may not be interchanged, or at the most they may be interchanged only in very restricted ways. B. It is the property of an object through which its existence transcends time and/or space. C. It is the property that distinguishes an active object from one that is not active. D. All of the mentioned
Explanation: Persistence deals with lifetime of data. Persistence saves the state and class of an object across time or space. 10) What is that concept in type theory in which a single name may denote objects of many different classes that are related by some common super class referred to ______