System Development Life Cycle

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Questions and Answers

What is the primary focus of the system design phase?

Describing the system's functional and non-functional components (correct)

Testing the entire system

Developing the program code or software

Defining the system requirements

What is the purpose of using Data Flow Diagrams (DFDs) in systems analysis?

To test the system's functionality

To communicate ideas about the gathered data (correct)

To develop the program code or software

To design the system's user interface

Which of the following is a characteristic of the Waterfall Model?

A focus on prototyping and iterative development

Involving the user in the development process

A sequential and linear approach to development (correct)

Flexibility in the development process

What is the primary purpose of the testing phase?

To ensure the system meets its objectives and is error-free Signup and view all the answers

What is the advantage of using Unified Modeling Language (UML) in software development?

It helps developers to communicate and logically validate desired features Signup and view all the answers

Which phase is responsible for translating the system specifications into program code or software?

Programming Signup and view all the answers

What is the potential limitation of using Data Flow Diagrams (DFDs) in systems analysis?

They have limitations and cannot describe a system completely Signup and view all the answers

What is a key difference between the Waterfall Model and Prototyping?

The Waterfall Model is a linear approach, while Prototyping is iterative Signup and view all the answers

What is the primary reliance of the Ad-Hoc Development approach?

Individual staff skills and experience Signup and view all the answers

Which of the following is NOT a step in the Waterfall Model?

System conceptualization Signup and view all the answers

What is the primary assumption of the Prototyping approach?

The developer knows all the requirements at the beginning of the project Signup and view all the answers

What is the primary purpose of Systems Analysis?

To identify the system requirements and benefits Signup and view all the answers

What is the primary purpose of Software Testing?

To verify that the system meets the requirements Signup and view all the answers

Which of the following approaches is most suitable for small projects where the staff is skilled?

Ad-Hoc Development Signup and view all the answers

What is the primary benefit of the Waterfall Model?

All of the above Signup and view all the answers

What is the primary purpose of the Prototyping approach?

To build a simplified version of the proposed system Signup and view all the answers

What is the purpose of testing in the system development process?

To identify errors and defects in the system Signup and view all the answers

What is the stage in the system development process where the new system is installed and reviewed by users and technical specialists?

Production and Maintenance Signup and view all the answers

What type of testing involves attempting to get the system to fail and violate processes and security controls?

Ad-Hoc Testing Signup and view all the answers

What is the term referred to when an operation in an organization switches from using an existing or old system to the new system?

Conversion Signup and view all the answers

What is the primary goal of system developers and their clients in the system development process?

To develop quality systems that address the organization’s business needs Signup and view all the answers

How many types of testing should be performed in the system development process?

3 Signup and view all the answers

Study Notes

Systems Development Life Cycle

The system development life cycle includes attempts to get the system to fail and to violate processes and security controls.
It consists of three types of testing: unit testing, systems testing, and acceptance testing.

Implementation and Production

Implementation is referred to as delivery and consists of conversion and training.
Conversion takes place when an operation in an organization switches from using an existing or old system to the new system.
When the new system is installed, it is said to be in production.
In the production stage, the system will be reviewed by both users and technical specialists to check if it meets the original objectives.

Maintenance

If the system is fine and meets all the objectives, then it should be maintained.
Errors will be corrected, and processing efficiency will be improved during maintenance.
Changes or new requirements in software or hardware, or improvement of the process, are also part of maintenance.

Development Process Life Cycle

The system developers and their clients share a common goal of developing information systems that effectively support the objectives of the business process.
The development process life cycle involves five stages: requirements definition, system design, programming, testing, and implementation.

System Design

The system design phase shows how the system will fulfill the objectives based on the requirements.
It involves three steps: description of the functions or components and how they will work, construction, and testing.
Data Flow Diagrams (DFD) and Unified Modeling Language (UML) are used to communicate ideas about the data gathered.

Programming

In the programming stage, system specifications are translated into program code or software.

Testing

Testing is the most crucial phase in systems development.
It involves testing each module in every simulation and the entire system.

Different Approaches in System Development

Ad-Hoc Development: relies on the skills and experience of individual staff and is suitable for small projects.
Waterfall Model: a structured system development approach that consists of systems analysis, system design, programming, testing, deployment, and maintenance.
Prototyping: develops a simplified version of the proposed system and presents it to the client, assuming all requirements are known at the beginning of the project.

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Description

Understand the system development life cycle, including testing types and implementation phases. Learn about unit testing, systems testing, acceptance testing, conversion, and training.