1.1.1 - Identify the context for which a new system is planned. Flashcards
What is the Systems Life Cycle?
The Systems Life Cycle (SDLC) refers to the stages in which the development of a new system passes through, typically starting with an analysis of the existing system.
Why are new systems normally created?
New systems are normally created to replace a less efficient system that is inefficient, no longer fit for purpose, outdated, or redundant.
What should be considered when planning a new system?
The context of the new system should be considered, including its extent and limitations, and an analysis of the current system.
What can be included in a system?
A system can include hardware, software, the people working it, and the immediate environment.
Who designs and analyses systems, and how do they do it?
Systems are designed and analysed by a systems analyst who documents how the existing system works through surveys, interviews, observations, and document tracing.
What do systems analysts evaluate in the old system?
They evaluate what works well and what doesn’t in order to design a more productive system.
What are some factors to consider when designing a new system?
Factors include existing infrastructure usability, hardware and software requirements, required permissions, ethical issues like worker redundancy, and retraining or upskilling needs.
What is a feasibility study and what criteria does it include?
A feasibility study evaluates a project’s potential based on criteria like Technical, Economical, Legal, Operational, and Scheduling (TELOS).
What does the ‘Technical’ criterion of a feasibility study entail?
It assesses whether the existing technology is sufficient to implement the new system.
What does the ‘Economical’ criterion of a feasibility study entail?
It evaluates whether the proposed system is cost-effective.
What does the ‘Legal’ criterion of a feasibility study entail?
It checks whether the proposed system conflicts with any laws or regulations.
What does the ‘Operational’ criterion of a feasibility study entail?
It assesses whether existing operational practices and processes are sufficient to support the new system.
What does the ‘Scheduling’ criterion of a feasibility study entail?
It estimates how long it will take to implement the new system.
