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3.1 Preliminary Analysis - Coggle Diagram
3.1 Preliminary Analysis
System Requirements
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Input example
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must include date, time, product code, customer number, and quantity.
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process example
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Final step
-payroll gaji , rekod kehadiran
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The video rental system must not execute new rental transactions for customers who have overdue videos.
control example
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An employee record must be added, changed, or deleted only by a member of the human resources department.
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Fact Finding Techniques
Develop a fact-finding plan, which can involve series of questions (4W1H), or use a more structured approach such as the Zachman Framework,
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Interviews
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Unsuccessful Interviews
For example, a misunderstanding or personality conflict could affect the interview negatively, or the interviewee might be afraid that the new system will eliminate or change his or her job.
Your supervisor might contact the interviewee’s supervisor, ask another systems analyst to interview the person, or find some other way to get the needed information.
Documentation Review
-Document review can help you understand how the current system is supposed to work.
-Remember that system documentation sometimes is out of date. Forms can change or be discontinued, and documented procedures often are modified or eliminated.
If the system uses a software package, you should review the documentation for that software.
Observations
Although some recent studies have raised questions about the original findings, you should be aware that observation can and does have an effect on normal operations.
With this in mind, always give advance notice to the supervisor in that area. In some situations, it might be helpful to explain the purpose of your visit to the people being observed.
Questionnaires
A questionnaire, also called a survey, is a document containing a number of standard questions that can be sent to many individuals.
First, does an analyst really need to know who the respondents are in order to match or correlate information?
For example, it might be important to know what percentage of users need a certain software feature, but specific usernames might not be relevant.
Second, does the questionnaire include any sensitive or controversial topics?
Many people do not want to be identified when answering a question such as “How well has your supervisor explained the system to you?”
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Research
Your research can include the Internet, IT magazines, and books to obtain background information, technical material, and news about industry trends and developments.
also can involve a visit to a physical location, called a site visit, where the objective is to observe a system in use at another location
Before a site visit, prepare just as you would for an interview.
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