Connecting you to IT Information

New Articles

Five Musts For A Gaming Rig

Feb 11, 2012

Modern and cutting edge gaming software requires hardware with the muscle and teeth that...

Network Operating Systems

Feb 9, 2012

Network Operating System (NOS) is a platform that allows two or more computers to function...

Getting Your Article Marketing Strategy Right
Getting Your Article Marketing Strategy Right

Feb 9, 2012

To market your articles effectively you have to be mindful of your intended audience and...

The Best Guide On How To Succeed In Article Marketing
The Best Guide On How To Succeed In Article Marketing

Feb 9, 2012

Focus on providing your visitors with useful content. Prospective customers are interested in...

Simple Way to Design Eye catching Barcode Images
Simple Way to Design Eye catching Barcode Images

Dec 21, 2011

Here is a simple and cost effective solution to design and print professional barcode images...

View All Articles

Information Technology Basics
Jan 31, 2010 Information Technology

Information Technology Basics. Technology Computer IT Technology-General...

Information Technology Basics
Jan 31, 2010 Information Technology

Information technology (IT), as defined by the Information Technology ... Basic Computer Literacy...

Computer Basics - Beginner\'s Information - Technology Info, Tips ...
Jan 31, 2010 Information Technology

Health Information Technology Basics gives your students an introduction to the fundamental...

System Analysis - Stages in the System Development Life Cycle

By Administrator Feb 18, 2010 System Analysis

The systems life cycle may be looked at as a 7 phase- problem solving procedure.

Stages in the Systems Development Life Cycle

The systems life cycle models the stages involved in developing an Information technology system. The system life cycle may be looked at as a 7 phase- problem solving procedure.
These stages are:

  • Initiation
  • Preliminary Investigation
  • System Analysis
  • System Design
  • System Development
  • System Implementation
  • System Maintenance

Initiation Stage

This is the first stage of the system life cycle and it involves finding out all about the existing system. Problems (limitations) with the existing systems are determined, and possible solutions are identified. This leads to a feasibility study which involves, costing, timescales, hardware and software requirements and staffing issues.

Investigation Stage

This stage is often referred to as the preliminary investigation stage, in which case the problems are defined, the scope of the system is determined, alternative solutions are suggested and a short report is produced.

Analysis Stage

Within this stage, data is collected and a deeper look (study) of the existing system is done. Data collection may be done through observation, interviews, document analysis and questionnaires.

Modeling tools are then used to analyze the system and new requirements are defined.
Modeling tools may include checklists, structural diagrams such as top-down analysis methodology, flow charts, grid charts and decision tables. Others are automated design tools such as computer-aided software engineering tools (CASE) which help system analysts to evaluate hardware and software alternatives.
At the end of this analysis, findings are documented. The documentation of these findings includes the description and scope of the existing system, the requirement of the new system and a proposed development programme or schedule is produced.

Design Stage

The design stage takes into consideration all the information gathered in the previous stages and uses this information to produce a technical document which is often referred to as the system specification.
Before the report or specification is produced however, alternative designs are evaluated. The evaluation of the designs involves economic, technical and operational feasibility. Economic consideration will include cost benefit analysis, while operational and technical evaluation will consider among others flexibility, scalability, integration and security.
At the end, a report is also produced which will include alternative designs and a recommendation.

System Development

The system specification developed in the design stage is used to develop the system. Under system development, two options are considered; this involves the type of developing software to use. This may be:

  • A packaged software (off-the shelf) e.g. Microsoft access software
  • Custom design software (bespoke)

This stage will also take in to consideration the hardware that is needed and the installation process.
The last step of this stage may also include the testing of the new system in which case sample data are fed into the system and the results are evaluated to ensure that the system is working according to specification.

System Implementation

The system implementation stage involves the installation of the system, staff training and conversion. There are different types of conversion plan, these are:

  • Direct approach: the old system is completely abandoned and a new one takes it place.
  • Parallel approach: Just as the name implies the old and the new systems are operated concurrently. This continues until the new system proves that it can be operated on its own and that it is works according to specification.
  • Pilot approach: This is when the new system is launched in just one sector or department of the entire organization or business. If the system works according to specification, it will then be implemented fully.

Note:

Stages of a system life cycle may differ depending on a given model. While some stages are separated in one model, they may be merged in another. The main point here is to understand what these stages involve and their roles in the development of information systems.

Article Tags: System Analysis

Search articles

Articles

Five Musts For A Gaming Rig
One advantage that desktops will always hold over portable computers is their raw ability to play powerful games . Read more. more →
By Feb 11, 2012 Free Games Resources
The Best Guide On How To Succeed In Article Marketing
The Best Guide On How To Succeed In Article Marketing
Business owners are starting to realize that if they market themselves online, they can make more income. Becoming an article marketer provides great exposure all over the Internet and gets people interested in your products or services. Here are some great tips to aid you on your way. more →
By Feb 9, 2012 Article Marketing
Getting Your Article Marketing Strategy Right
Getting Your Article Marketing Strategy Right
Great Advice To Help With Article Marketing. If you wish to promote your website and your work, you should learn more about article marketing. The following tips can help you boost the effectiveness of your marketing. more →
By Feb 9, 2012 Article Marketing
Network Operating Systems
Network operating system is the underlying technology that enables two or more computer systems to form a network. This article explains what are NOS is and the main types of Network operating system (NOS). more →
By Feb 9, 2012 Network Technology
Simple Way to Design Eye catching Barcode Images
Simple Way to Design Eye catching Barcode Images
Here is a simple and cost effective solution to design and print professional barcode images of different colors, dimensions and shapes which is highly suitable for you and your business. Software is easy to use and generates attractive barcodes. more →
By brdb2sft Dec 21, 2011 Software
How To Make Money In Mobile Marketing
Mobile marketing may be important to business planning, but it can be difficult to learn and create a great marketing plan. There are such a variety of options available that you must educate yourself to be fully able to choose the right options. Keep reading for tips and ideas on how you... more →
By Dec 14, 2011 Mobile marketing
Easy to Use yet Powerful Windows Recovery Software
Do you wish to do data recovery in right way? Just relax! This article provides your various simplest methodologies for instant recovery of missing or deleted data from fixed drive and other usb removable storage media devices in few mouse clicks. more →
By Windows Recovery Nov 26, 2011 Software
6 key accessories you need to complete your laptop
6 Key Accessories You Need To Complete Your Laptop The usefulness of a laptop is undeniable in today's society as they have grown in popularity significantly in recent years. However, a laptop can be so much more useful if you have the right accessories and additions so it will... more →
By Administrator Nov 18, 2011 Laptops
Recover data files
Download free data recovery software helps a user to recover data in all major loss situations whether it is lost from fixed hard drive partition or USB storage media. more →
By recb8sft Nov 14, 2011 Software
ICT games – Numeracy - Literacy and Phonics
ICT games are very important technologies for learning and teaching in today’s educational environment. This technology can be used to help children learn from very early ages. The key issue is that children learn more if they enjoy what they are doing, and games is the next... more →
By Administrator Oct 21, 2011 ICT Games

View All Articles

Leave Comment

characters left:

captchaPlease input letters you see on the image.
Click on image to redraw.

Rating


Rating: 0.00 / 10 (0 Vote cast)

About

Divinekonection is a knowledgebase Information technology directory. We focus on information and communications technology, games technology, current news in emerging technologies and new innovations worldwide in the business and information technology sector.

What we do

We help get your technology business and services listed in our technology directory, this way people interested in your kind of technology services you offer can find you more easily and faster. We get your company or business in front of clients who need them most.

Who we are

Divinekonection is made up of a little group of experts and our directory is focused on international businesses, and global audience. We provide IT content to clients and customers.

Contact Us

You can contac us by using the contact form on our site.


Top