MC	Objects should be made persistent when...	you need them over multiple program executions.	correct	you only need them during 1 program execution, and then never again.	incorrect	
MC	Which statement is NOT CORRECT?	Encapsulation refers to storing a value in a variable, and never changing it again. This way its value is safe forever.	incorrect	Encapsulation implies that the methods of a class are not accessible to the other classes. 	incorrect	Encapsulation refers to storing a value variable, and making it impossible to retrieve it.	incorrect	Encapsulation refers to controlling the way a variable is accessed by forcing users to use getter/setter methods that prevent misuse of the variable.	correct	
MC	Objects should be made persistent when...	you only need them during 1 program execution, and then never again.	incorrect	you need them over multiple program executions.	correct	
MC	Which statement is CORRECT?	An OID is the same as a primary key in a relational database setting.	incorrect	Each literal is defined by an OID according to the ODMG standard.	incorrect	The OID of an object remains the same during the entire lifetime of the object.	correct	Two objects with the same values always have the same OID.	incorrect	
MC	What is NOT an advantage of OODBMSs?	The identity based approach allows for improved performance when performing complex queries involving multiple interrelated objects, avoiding expensive joins. 	incorrect	They solve the impedance mismatch problem by using the same data model as the programming language.	incorrect	Scalability and fault-tolerance of OODBMSs is far better than that of their relational counterparts.	correct	They allow to store objects and relationships in a transparent way.	incorrect	
MC	Objects should be made persistent when...	you only need them during 1 program execution, and then never again.	incorrect	you need them over multiple program executions.	correct	
MC	What is NOT an advantage of OODBMSs?	They allow to store objects and relationships in a transparent way.	incorrect	They solve the impedance mismatch problem by using the same data model as the programming language.	incorrect	Scalability and fault-tolerance of OODBMSs is far better than that of their relational counterparts.	correct	The identity based approach allows for improved performance when performing complex queries involving multiple interrelated objects, avoiding expensive joins. 	incorrect	
MC	Objects should be made persistent when...	you only need them during 1 program execution, and then never again.	incorrect	you need them over multiple program executions.	correct	
MC	Which statement is NOT CORRECT?	Objects store both a piece of information and ways to manipulate this information.	incorrect	Objects are blueprints of classes. "Human", "Employee", "Sale" are examples of objects.	correct	A class can be instantiated into several objects.  	incorrect	Objects are instances of classes. The people "Bart Baesens", "Wilfried Lemahieu" and "Seppe vanden Broucke" could be instances of the class "Person".	incorrect	
MC	Which statement is CORRECT?	Unary, binary and ternary relationships are supported in ODL. 	incorrect	The extent of a class is the set of all current instances.  	correct	Many-to-many relationships cannot be expressed using ODL.	incorrect	ODL is only optimized for Java objects.	incorrect