1. What is DFD? Why do systems analysts use DFDs?
A data-flow diagram is a picture of the movement of data between external entities and the
processes and data stores within a system. Systems analysts use data-flow diagrams to help
1. Describe and compare the various sources of software.
Information Technology Services Firms - When task requires custom support and can't be built
In-house developers - When resources and staff are available and system must
1. Describe systems analysis and the major activities that occur during this phase of the systems
development life cycle.
System analysis is a process of collecting factual data, involved processes, identifying problems
and recommending t
1. Contrast the following terms:
a. Mission a statement in very simple terms what business the company is in.
b. Objective statements A series of statements that express an organizations qualitative and
quantitative goals for reaching a d
What is information systems analysis and design?
A complex, challenging, and stimulating organizational process that a team of business and
systems professionals use to develop and maintain computer-based information system
1. Contrast the following items:
a. Break-even analysis A type of cost-benefit analysis to identify at what point benefits equal
b. Present value The current value of a future cash flow.
c. Net present value NPV is the difference b