Software Engineering Term - Essay Example

They are primarily used in the requirements analysis and aims to simplify the transition to object-oriented design and programming. Ans: Reference architecture models are more abstract and describe a larger class of systems. They are a definite way to inform the designers about the general structure of that class of system. They are usually derived from a study of the application domain. One such example is the OSI reference model. The lower levels are concerned with physical interconnection, the middle layers with data transfer and the upper layers with the transfer of semantically meaningful application information.

With the advancement of technology, a layer could be transparently re-implemented without affecting the system using other layers. Ans: Object-oriented design (OOD) is concerned with developing an object-oriented model of a software system to put into practice the identified requirements. Many OOD methods have been described since the late 1980s. The most popular OOD methods include Booch, Buhr, Wasserman, and the HOOD method developed by the European Space Agency. OOD can yield the following benefits: Ans: In can be from different angles. . 3.

The operations with the object class are in the lower section of the rectangle. 4. What is a Reference Architecture Model Please give an example.Ans: Reference architecture models are more abstract and describe a larger class of systems. They are a definite way to inform the designers about the general structure of that class of system. They are usually derived from a study of the application domain. One such example is the OSI reference model. The lower levels are concerned with physical interconnection, the middle layers with data transfer and the upper layers with the transfer of semantically meaningful application information.

With the advancement of technology, a layer could be transparently re-implemented without affecting the system using other layers. 5. What is object oriented designAns: Object-oriented design (OOD) is concerned with developing an object-oriented model of a software system to put into practice the identified requirements. Many OOD methods have been described since the late 1980s. The most popular OOD methods include Booch, Buhr, Wasserman, and the HOOD method developed by the European Space Agency.

OOD can yield the following benefits: maintainability through simplified mapping to the problem domain, which provides for less analysis effort, less complexity in system design, easier verification by the user; reusability of the design artifacts, which saves time and costs; and productivity gains through direct mapping to features of Object-Oriented Programming Languages6. What are the major activities in Object-Oriented DesignAns: The object oriented design includes the following activities:Understand and define the context and the modes of use of the systemDesign the system