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| System A Simple
Definition |
| The Term System Originate from
a Greek word systema, which means, "place together". In
simple terms, System can be defined as "A collection of
components that work together to realize some objective”
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| Scientific Definition |
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An integrated set of
interoperable elements, each with explicitly
specified and bounded capabilities, working
synergistically to perform value-added processing
to enable a User to satisfy mission-oriented
operational needs in a prescribed operating
environment with a specified outcome and
probability of success
Interoperability - a property
referring to the ability of elements to work
together. Interoperable elements hence mean the
elements that are compatible each other in form,
format, fit and functions. In software, the term
interoperability is used to describe the
capability of different programs to exchange data
via a common set of exchange formats, to read and
write the same file formats, and to use the same
protocols Read More..
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| Information Systems |
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In a
general sense, the term Information System (IS)
refers to a system of people, data records and
activities that process the data and information
in an organization, and it includes the
organization's manual and automated processes.
The
purposes of Information system are to process
input, maintain data, produce reports, handle
queries, handle on line transactions, generate
reports, and other output Read More..
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| Open Systems & Close
Systems |
Open System
continuously interacts with its environment. Open
systems are those that maintain their state and
exhibit the characteristics of openness
Close System is in the state
of being isolated from its surrounding
environment. The term often refers to an idealized
system in which closure is perfect Read More..
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| Types of Information
Systems |
Transaction processing
systems(TPS)automate the handling of data
about business activities or transactions, which
can be thought of as simple, discrete events in
the life of an organization Read More..
Management Information
Systems(MIS) is a planned system of the
collecting, processing, storing and disseminating
data in the form of information needed to carry
out the functions of management Read
More..
Decision Support Systems
(DSS) are a specific class of computerized
information systems that supports business and
organizational decision-making activities Read More..
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| Data Vs. Information |
| Data are plain facts. The word
"data" is plural for "datum." When data are processed,
organized, structured or presented in a given context so
as to make them useful, they are called Information. It
is not enough to have data (such as statistics on the
economy). Data themselves are fairly useless. But when
these data are interpreted and processed to determine
its true meaning, they becomes useful and can be called
Information. |
| Information Management |
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Information management
(IM) is the collection and management of
information from one or more sources and the
distribution of that information to one or more
audiences. This sometimes involves those who have
a stake in, or a right to that information.
Management means the organization of and control
over the structure, processing and delivery of
information.
Reference
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| Software Engineering |
The systematic
application of scientific and technological
knowledge, through the medium of sound engineering
principles, to the production of computer
programs, and to the requirements definition,
functional specification, design description,
program implementation, and test methods that lead
up to this code.
To meet
this challenge, software engineers have adapted
many techniques from older engineering fields, as
well as developing new ones |
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| The best-known
life-cycle model is the waterfall model consisting
of a requirements definition phase, a design
phase, a coding phase, a testing phase, and a
maintenance phase
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Introduction
