Systems Analysis and Design
System analysis and design is a complex, challenging, and
simulating organizational process that a team of business and systems
professionals uses to develop and maintain computer-based information systems.
It is an organizational improvement process Information system are built and
rebuilt for organizational benefits.
An important (but not the only)
result of system analysis and design is application software i.e. software
designed to support organizational functions or processes such as inventory
management, payroll, or mark-sheet analysis. In addition to application software,
the total information system includes the hardware and systems software on which
the application software runs, documentation and training materials, the
specific job roles associated with the overall system, controls and the people
who use the software along with their work methods.
In systems analysis and design, we
use various methodologies, techniques and tools that have been developed,
tested, and widely used over the years to assist people during system analysis
and design.
Methodologies are comprehensive, multi step approaches to systems
development that will guide your work and influence the quality of your final
product: the information system. Methodologies use a standard set of steps. A
methodology adopted by an organization will be consistent with its general
management style. Most methodologies incorporate several development
techniques.
Techniques are particular processes that will help to ensure that your
work is well thought-out, complete, and comprehensible to other on the project
team. Techniques also provide support for a wide range of tasks like conducting
interviews, planning and managing the activities in a system development
project, diagramming the system’s logic, and designing the reports that the
system will generate.
Tools are typically computer programs that make it easy to use and benefit
from the techniques and to faithfully follow the guidelines of the overall
development methodology.
To be effective, both techniques and
tools must be consistent with an organizations system development methodology.
These make easy for system developers to conduct the steps in methodology.
Importance of Systems Analysis and Design
Systems analysis and design is the
collection of important activities that takes place when new information
systems are being built or existing ones are changed. All the activities are needed
to build good information systems. The systems developed by using systems analysis
and design activities fulfill the requirements of organizations’ personnel.
Furthermore, we can develop
information systems easily and rapidly because there are lots of supporting
methodologies, tools, and techniques. The information system can be built in
the most effective way. The systems also fit into an existing environment and will
be very easy to use and maintain. By following the activities involved in
systems analysis and design, we can develop high quality information system
within allocated budget and time.
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