System Analysis and Design Ch. 2
Terms in this set (38)
the reasons, or justification, for a proposal.
System development typically starts with this
the process of identifying long-term organizational goals, strategies, and resources
reflects the firm's vision, purpose, and values
usually focus on long-term challenges and goals, the importance of the firm's stakeholders, and a commitment to the firm's role as a corporate citizen
focus on a specific product or project, an operating division, the entire company, or the mission statement itself
Careful planning can help assure that
- the project supports overall business strategy and operational needs
- the project scope is well-defined and clearly stated
- the project goals are realistic, achievable, and tied to specific statements, assumptions, constraints, factors, and other inputs
the reasons, or justification, for a proposal. Should be comprehensive, yet easy to understand. It should describe the project clearly, provide the justification to proceed, and estimate the project's financial impact.
the starting point for most projects. a formal way of asking for IT support
result when a system that was designed for a specific hardware configuration becomes obsolete when a new hardware is introduced
a system must have these to ensure that data is secure and accurate
Internal and External factors
affect every business decision that a company makes, and IT projects are no exception.
a strategic plan that stresses technology
this tends to create a favorable climate for IT projects that extents throughout the organization.
Electronic product code (EPC) technology
will overshadow bar code technology in the future. uses RFID tags to identify and monitor the movement of each individual product, from the factory floor to the retail checkout counter
vitally important to any business. Info systems that interact with this usually receive top priority.
Federal, state, and local government regulations
these directly affect the design of corporate information systems
Properly designed form
this streamlines the request process and ensure consistency. it must be easy to understand and include clear instructions.
Systems review committee
most large companies have this to evaluate systems requests instead of relying on a single individual.
a proposed system will be used effectively after it has been developed
refers to the technical resources needed to develop, purchase, install, or operate the system
this means that the project benefits of the proposed system outweigh the estimated costs usually considered the total cost of ownership (TCO)
means that a project can be implemented in an acceptable time frame. Systems analyst must consider interaction between time and costs.
an ongoing task that must be performed throughout the systems development process
Tangible costs and benefits
the analyst should use these that can be measured in dollars.
by planning ahead for these, the IT department manages its resources better and keeps the systems review committee fully informed without needing prior approval in every case
Additional capability they would like to have
instead of focusing on difficulties, you should question users about this
Determining the project scope
defining the specific boundaries, or extent, of the project
this needs to be specific, such as "overtime pay is not being calculated correctly for production workers on the second shift at the Yorktown plant."
projects with very general scope definitions are at risk of expanding gradually in a process called
a requirement or condition that the system must satisfy or an outcome that the system must achieve.
you will not know the _____ of departments involved in the study. you should obtain organization charts to understand the functions and identify people you want to interview.
Current system documentation
although interviews are extremely important method of obtaining information, you need to investigate this as well
observe the current system in operation
another fact-finding method
this is not as flexible as a series of interviews, but it is less expensive, generally takes less time, and can involve a broad cross-section of people.
time and cost estimates
you should develop these for the requirements modeling task for the next SDLC phase, system analysis
a company examines its purpose, vision, values and develops a mission satement, which leads to goals, objectives, day-to-day operations, and business results that affect company stakeholders.
this examines strengths, weaknesses, opportunities, and threats. SWOT analysis can be used at the enterprise level and for individual projects.
these are initiated to improve performance, provide more information, reduce costs, strengthen controls, or provide better service.
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