Briefly describe design classes: utility, control, and boundary. How do they differ from entity classes?

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Briefly describe design classes: utility, control, and boundary. How do they differ from “entity” classes?

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Design classes are a way to organize the components of a system into different categories based on their responsibilities and interactions The three main categories of design classes are utility classes control classes and boundary classes Utility classes are used to provide common functionality that can be reused across different parts of the system They typically contain static methods and variables that can be accessed directly without the need to create an instance of the class Examples of utility classes include mathematical functions string manipulation functions and data validation functions Control classes are used to manage the flow of data and control between different parts of the system They typically contain the business logic of the system and are responsible for coordinating the interactions between different components Control classes often contain methods that encapsulate complex logic and provide a simplified interface for other classes to interact with Boundary classes are used to represent the interface between the system and the outside world They typically contain the user interface components of the system and are responsible for handling user input and displaying output to the user Boundary classes often contain methods that interact with the underlying control classes and provide a userfriendly interface for the user to interact with the system Entity classes on the other hand are used to represent the data model of the system They typically contain the attributes and methods that are used to manipulate the data stored in the system Entity classes are often used in conjunction with control classes to provide a complete solution for managing the data in the system The main difference between design classes and entity classes is that design classes are focused on the behavior and interactions of the system while entity classes are focused on the data model and storage of the system Design classes are typically used to manage the flow of data and control between different parts of the system while entity classes are used to store and manipulate the data in the system For example in a car manufacturing system the design classes might include a control class for managing the production process a boundary class for handling user input and displaying output and a utility class ...View the full answer

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Usman Nasir

I did Master of Commerce in year 2009 and completed ACCA (Association of Chartered Certified Accountants) in year 2013. I have 10 years of practical experience inclusive of teaching and industry. Currently i am working in a multinational company as finance manager and serving as part time teacher in a university. I have been doing tutoring via many sites. I am very strong at solving numerical / theoretical scenario-based questions.

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