System Analysis(Chapter 2)
Card Set Information
System Analysis(Chapter 2)
Chapter 2 questions
In a DFD, processes contain the business logic, also called business rules, that transform the data and produce the required results.
.The ____ is a widely used method of visualizing and documenting software systems design.
Which of the following is a path that development can follow?
A) in-house development
C) purchase of a software package with possible modification
D) use of outside consultants
.Data should be entered into a system where and when it occurs because delays cause data errors.
n a DFD, the Gane and Sarson symbol for a data store is a ____.
C) flat rectangle that is open on the right side and closed on the left side
The software that a company’s IT department makes, builds, and develops is called ____ software.
JAD provides a fast-track approach to a full spectrum of system development tasks, including planning, design, construction, and implementation.
Some data files should be totally hidden from view, while others should have ____ so users can view, but not change, the data
B) read-only properties
Advantages of purchasing a software package over developing software in-house include all of the following except ____.
A) satisfaction of unique business requirements
System documentation always is up to date.
____ resemble verbs that describe what and how an object does something.
Modified Multiple ChoiceWhen preparing a checklist of specific tasks to observe and questions to ask, a systems analyst should consider ____.
A) asking sufficient questions to ensure a complete understanding of the present system operation
B) observing all steps in a transaction and noting the documents, inputs, outputs, and processes involved
C) talking to the people who receive current reports to see whether the reports are complete, timely, accurate, and in a useful form
D) examining each form, record, and report
Sequence diagrams, state transition diagrams, and activity diagrams are dynamic modeling tools that can help a systems analyst understand how objects behave and interact with the system.
n a sequence diagram, classes that send or receive messages are shown at the bottom of the diagram.
Knowledge of a company’s formal and informal structures helps a systems analyst determine the people to interview during the systems analysis phase.
A system is reliable if it adequately handles errors, such as input errors, processing errors, hardware failures, or human mistakes.
In a sequence diagram, a message is identified by a narrow vertical shape that covers the lifeline
When designing a questionnaire, the most important rule of all is to make sure that questions collect the right data in a form that can be used to further fact-finding.
The term ____ refers to a system’s ability to handle increased business volume and transactions in the future.
Two data stores can be connected by a data flow without an intervening process.
If management decides to develop a system in-house, then the transition to the systems design phase ends.
When studying an information system, examples of actual documents should be collected using a process called ____