SE - Quiz 2 Question 14 of 50 How are the Sequence Diagrams and Design Class Diagrams related? (1 correct answer) C Object Sequence Diagrams can feed back only new operations to the Design Class diagram Object Sequence Diagrams can feed back operations, possible new classes and relationships between classes to the Design Class diagram The Design Class Diagram is used to identify the classes which will be used as types for the participant objects in the Object Sequence Diagrams .

In a model-driven development process, sequence diagrams and class diagrams, both being different types of UML diagrams, tend to interact quite heavily. Class diagrams showcase class attributes, operations, and relationships, and are fundamental to defining the structure of a system. In contrast, sequence diagrams, as interaction diagrams, are focused more on the temporal ordering of messages (interactions between objects and classes.<br /><br />Any sequence diagram doesn't exist in isolation but is directly obtained from collaboration diagrams/class diagrams. After their creation, these sequence diagrams typically contribute added information back to the classes that were initially identified in the class diagrams like operation parameter lists and operation return types.<br /><br />Both "Object Sequence Diagrams feedback only new operations to the Design Class diagram" AND "The Design Class Diagram identifying participant object types in Sequence Diagrams" aspects could find alignment with reality part of the time.<br /><br />However, the comprehensive relationship between these two UML diagrams extends to executing a bi-directional form of feedback. The sequence diagrams can feed back operations, possibly identify new classes (that weren't part of the initial Class Diagram), and even define new associations (relationships between classes) to the class diagram. This aligns with general design process practices.<br /><br />Exploring sequence diagrams can often lead to the realization of in-depth class relationships and requirements not initially evident when first crafting the Class Diagram— feeding this back to enhance and further refine the original Class Diagram is common. <br /><br />Therefore, the objectively valid answer is "Object Sequence Diagrams can feed back operations, possible new classes and relationships between classes to the Design Class diagram".