OOD Realization Quizziz

Use case realization is the process of elaborating the detailed design for a particular use case using interaction diagrams

• True

• False

... is simply connectors between objects to carry the messages.

... focuses on the business logic, also known as problem domain layer of classes

What is the function of use case controller?

• Reduces coupling between view and domain layer

• Managing database connections and transactions

• Switchboard between user-interface classes and domain layer classes

• Handling detailed business logic and computations

... the instantiated class objects that perform the actions (methods) to execute the use case.

Which one is communication diagram?

• A type of interaction diagram which emphasizes the set of objects involved in a use case

• A type of interaction diagram which emphasizes the sequence of messages involved in a use case

... is the external role of the person or thing that initiates the use case.

Lifeline

• The dashed line under the object which serves as an origin point and a destination point for messages

• The vertical box on a lifeline which indicates the time period when the object is executing based on the message

Two methods for Data Access to instantiate a new object

• Instantiate the object in memory, the object invokes the data access to get any required persistent data

• Send a message to the data access object, and it obtains the required persistent data and then instantiates the new object

• Directly modifying the database schema to fit the new object's structure and then instantiating it

• Creating a placeholder object that gets populated asynchronously over time without using data access methods

... the requests for service with an originating actor or object and a destination object, which performs the requested service