¶ … Systems Life Cycle and Database Systems Including
> Define systems, including why systems have a beginning and end.
> Discuss the importance of integrating a life cycle into the plan for development of a database
> Consider your organization or a business with which you are familiar. Provide examples of the database system it uses, its systems life cycle and how they are related. Is this effective? Why or why not?
> If your organization does not use a formal database system, what should it be implementing? Why?
The systems lifecycle in systems engineering refers to a system that addresses all phases of the engineering process. This includes: system conception, design and development, production and/or construction, distribution, operation, maintenance and support, retirement, phase-out and disposal.
As elaboration of each, we have:
1. Initial idea: this regards what the project is about, its purpose, and ways of accomplishing it.
Feasibility study -- how long the project should take, its scope and deadline. This is drawn up by Management who also assesses feasibility of idea in terms of economic and organizational concepts. Smaller projects omit this stage
3. Requirements analysis -- These are business options to the problem which may be supported by technical documents such as high-level DFD's, Logical Data Models (LDM) and Work Practice Models and present financial and other risks.
4. Systems analysis and specifications -- This provides a logical model of the system and gives precise details of what it is going to do without going into how it is going to do it.
5. Systems Design - this stage deals with how the requirements of the system are going to be implemented. A number of designs will be generated and the one that comes the closest to the idea and involves least cost and hassle as well as utilization of labor will be selected for employment.
6. Development -- program code is written. Each unit is tested to...
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