MC	Which statement is CORRECT?	A composite aggregation has a maximum multiplicity of 1 and a minimum multiplicity of 1 at the composite side.	incorrect	A qualified association in UML is similar to a weak entity type in EER.	correct	An aggregation cannot have attribute types.	incorrect	An existence dependent entity type always participates in a 1:1 relationship type.	incorrect	
MC	<img class="img-fluid" src="http://www.pdbmbook.com/static/quiz/fig2_3_10.png"><br>Which of the following statements about the above UML model is correct?	A movie's ReleaseDate can be freely changed.	incorrect	A movie can have more than one director. 	incorrect	A production can be a movie and a play at the same time. 	incorrect	A person can be an actor and a director in the same production.	correct	
MC	Which statement about access modifiers is correct?	A private access modifier is denoted with a '#', public with '+' and protected with '-'	incorrect	A private access modifier is denoted with a '+', public with '#' and protected with '-'.	incorrect	A private access modifier is denoted with a '-', public with '#' and protected with '+'	incorrect	A private access modifier is denoted with a '-', public with '+' and protected with '#'.	correct	
MC	<img class="img-fluid" src="http://www.pdbmbook.com/static/quiz/fig3_3_1.png"><br>Which statement is NOT CORRECT?	The minimum multiplicity at the side of 'Book' should be 1.	correct	The maximum multiplicity at the side of 'Book' should be 1.	incorrect	'Chapter' will automatically be removed when 'Book' is removed.	incorrect	This aggregation is composite.	incorrect	
MC	<img class="img-fluid" src="http://www.pdbmbook.com/static/quiz/fig2_3_11.png"><br>Which of the following statements about the above UML model is not correct?	This UML data model applies the principle of information hiding. 	incorrect	A play's ShowDate and a TV Show's AirDate cannot be deleted. However, values can be added. 	incorrect	An actor can star in several productions.	incorrect	A person is existence dependent on a production.	correct	
MC	Consider the following EER model of a database which stores information about scientific publications.<br><br><img class="img-fluid" src="http://www.pdbmbook.com/static/quiz/fig3_10.png"><br><br>Which statement is CORRECT?	According to the EER model, an author can be a reviewer of his/her own peer reviewed paper.	correct	According to the EER model, two journals can never have the same title, even when they are being published by different publishers.	incorrect	According to the EER model, a scientific article can be at the same time a peer reviewed paper and a technical report.	incorrect	The EER model has weak entity types, but no existence dependent entity types. 	incorrect	
MC	Which statement is NOT CORRECT?	OCL is a declarative language.	incorrect	UML supports variables with unique values.	correct	A qualified association in UML is similar to a weak entity type in EER.	incorrect	Information hiding means that data can only be accessed via getter and setter methods.	incorrect	
MC	A composite aggregation...	has a maximum multiplicity of 1 and a minimum multiplicity of 0 or 1 at the composite side. 	correct	has a maximum multiplicity of n and a minimum multiplicity of 0 or 1 at the composite side. 	incorrect	has a maximum multiplicity of n and a minimum multiplicity of 0 at the composite side. 	incorrect	has a maximum multiplicity of 1 and a minimum multiplicity of 1 at the composite side. 	incorrect	
MC	Which of the following statements about OCL is not correct?	OCL can be used to specify various types of constraints in a procedural way.	correct	A class invariant is a constraint that holds for all objects of a class.	incorrect	Role names of associations can be used to navigate between classes.	incorrect	Pre- and post-conditions on methods must be true when a method either begins or ends. 	incorrect	
MC	Which statement about UML modelling is correct?	OCL requires to define how constraints should be achieved.	incorrect	Information hiding can be achieved through the use of a private access modifier.	correct	The default changeability property allows no further changes once a value or link is established.	incorrect	A shared aggregation represents a tight coupling between both classes.	incorrect