SYSTEMS DESIGN
Information Systems Life Cycle can be divided into three broad categories.
SYSTEMS DESIGN
While systems analysis describes what a system should do to meet information requirements, systems design shows how the system will fulfil this objective. The design of an information system is the overall plan or model for that system. Like the blueprint of a building or house, it consists of all the specifications that give the system its form and structure. Information systems design is an exacting and creative task demanding imagination, sensitivity to detail, and expert skills.
While systems analysis describes what a system should do to meet information requirements, systems design shows how the system will fulfil this objective. The design of an information system is the overall plan or model for that system. Like the blueprint of a building or house, it consists of all the specifications that give the system its form and structure. Information systems design is an exacting and creative task demanding imagination, sensitivity to detail, and expert skills.
Systems design has three
objectives. First, the systems designer is responsible for considering
alternative technology configurations for carrying out and developing the system
as described by the analyst. This may involve analyses of the performance of different
pieces of hardware and software, security capabilities of systems, network alternatives,
and the portability or changeability of systems hardware.
Second, designers are responsible for the management and control of the
technical realization of systems. Detailed programming specifications, coding
of data, documentation, designers are responsible for the actual procurement of
the hardware, consultants, and software needed by the system.
Third, the systems designer details the system specifications that will
deliver the functions identified during systems analysis. These specifications
should address all of the managerial, organizational, and technological components
of the system solution.
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Logical and Physical Design
