Which perspective in system modelling shows the system or data architecture.

System Modelling MCQs : This section focuses on "System Modelling" of Software Engineering. These Multiple Choice Questions (MCQ) should be practiced to improve the Software Engineering skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations.

1. Which of the following model in system modelling depicts the dynamic behaviour of the system?

A. Behavioral Model
B. Context Model
C. Structural Model
D. Object Model

View Answer

Ans : A

Explanation: Behavioral models are used to describe the dynamic behavior of an executing system. This can be modeled from the perspective of the data processed by the system or by the events that stimulate responses from a system.

2. Which of the following model in system modelling depicts the static nature of the system ?

A. Structural Model
B. External Model
C. Behavioral Model
D. Data Model

View Answer

Ans : A

Explanation: Structural models show the organization and architecture of a system. These are used to define the static structure of classes in a system and their associations.

3. Which of the following perspective in system modelling shows the system or data architecture?

A. Data perspective
B. External perspective
C. Behavioral perspective
D. Structural perspective

View Answer

Ans : D

Explanation: Structural perspective is used to define the static structure of classes in a system and their associations.

4. The UML supports event-based modeling using ____________ diagrams.

A. Deployment
B. Collaboration
C. State chart
D. All of the above

View Answer

Ans : C

Explanation: State diagrams show system states and events that cause transitions from one state to another.

5. Which of the following is true?

A. Activity diagrams are used to model the processing of data.
B. Model-driven engineering is just a theoretical concept.
C. Model-driven engineering cannot be converted into a working/executable code.
D. All of the above

View Answer

Ans : A

Explanation: Activity diagrams are used to model the processing of data is true statement.

6. Which of the following diagram is not supported by UML considering Data-driven modeling ?

A. Activity
B. Data Flow Diagram (DFD)
C. State Chart
D. Component

View Answer

Ans : B

Explanation: DFDs focus on system functions and do not recognize system objects.

7. Which level of Entity Relationship Diagram (ERD) models all entities and relationships ?

A. 1
B. 2
C. 3
D. 4

View Answer

Ans : B

Explanation: Level 1 ERD models all data objects (entities) and their "connections" to one another while Level 3 ERD models all entities, relationships, and the attributes that provide further depth.

8. Which of the following is false?

A. A data object can encapsulates processes and operation as well.
B. One creates Behavioral models of a system when you are discussing and designing the system architecture.
C. Both A and B
D. None of the above

View Answer

Ans : C

Explanation: Both option A And B are False statement.

9. Which diagram of UML represent Interaction modeling?

A. Use Case
B. Sequence
C. State Chart
D. Both A and B

View Answer

Ans : D

Explanation: Use case modeling is mostly used to model interactions between a system and external actors.Sequence diagrams are used to model interactions between system components, although external agents may also be included.

10. Which of the following statement is incorrect regarding the Class-responsibility-collaborator (CRC) modeling ?

A. All use-case scenarios (and corresponding use-case diagrams) are organized into categories in CRC modelling
B. The review leader reads the use-case deliberately
C. Only developers in the review (of the CRC model) are given a subset of the CRC model index cards
D. All of the above

View Answer

Ans : C

Explanation: All participants in the review (of the CRC model) are given a subset of the CRC model index cards.

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Object oriented programming refers to the programming paradigm based on the concept of objects that can also contain data in form of different fields and these fields are known as properties or attributes. It also includes code in the form of procedures, which are known as methods. The aim of object oriented programming is to implement Real world entities such as polymorphism, inheritance, hiding etc. It binds functions and data that operate over them in order to eliminate that no code can access this particular data instead of function. In order to learn about different object-oriented programming concepts, you can easily avail Assignment help in USA, where professionals are always available to help you in writing for the assignments related to oops.

Article Summary

This meticulous article explains in detail the crucial concept of object-oriented programming along with the multifaceted advantages and disadvantages pertaining to it. It further discusses the various fundamentals linked to the implementation of classes in the object-oriented programming language.

Advantages and Disadvantages of object oriented programming

The primary objective behind the development of object oriented approach is basically to eliminate that limitations of procedural programming method. It has proved as best approach for software development but it also includes some disadvantages. Some of the major advantages and disadvantages of OOP are as follows:

Advantages of object oriented programming (OOP)

• Object-oriented programming provides the feature of reusability of classes with the help of which it is easy to use all the classes again that have already been created previously.
• It allows for the parallel development of classes due to which object oriented programming is considered as a quickest way of development for completing the programs.
• It is one of the secure development approaches in which data is hidden that cannot be assessed by any external function.

Disadvantages of object oriented program`ming (OOP)

• It is possible that the relation among all the available classes become artificial that may cause difficulties in the development.
• In comparative to procedural approach, programs development with object oriented programming language are large in size.
• Due to large size of program, there is a need to execute more instructions.

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Object Oriented Programming – Encapsulation, Objects and instantiation

Program Design

The application is based on a grocery shopping cart. When shopping for groceries online a Customer chooses a Product and places an Order for some quantity of it. The order is added to a Cart. A Date is set for the delivery. More orders can be added to the cart, and they can be changed up until checking out. To get to assignments in short deadlines, you can search for Instant Assignment Help. Programming experts are always available to assist you in completing your assignments on time with high- quality.

The partial UML class diagram below shows the underlying data model you should use to achieve this scenario:

Examples for implementation of classes in object oriented programming language

Product.java

This class contains the data members to store the details of a product such as product code and description etc. Also it consists of the accessors and mutators to access those data members which are declared private. Here, the concept of Encapsulation is used.

What perspectives may be used for system Modelling?

Which perspective in system Modelling shows the context or environment of the system?

In which of the following perspective you model the organization of a system or the structure of the data that is processed by the system?

What is System Modeling explain the different perspective that the system model developed?