What are data models?
Data models describe data structures and design. I’m going to use two fact-finding techniques such as document review and research to answer this question.
Document review
Document review can assist you understand how the current system is worked. Therefore, you should get documentation of data models in current system, such as copies of actual forms and operating documents, blank copies of forms and samples of actual completed forms in order to understand what data models are in current system. But you should check that the documentation of data models is out of date.
Research
Research is a significant fact-finding technique to get information, including Internet, books, and IT magazines. Also, you can consult or discuss with other IT professional to understand what data models are.
Observation, questionnaires and surveys and sampling can not help to answer this question because in this system analysis phase, data models can not be observed, surveyed and sampled.
What are process models?
Process models represent the logic that data flowing into a process which transform the data and result output data flow. I am going to use two fact-finding techniques such as document review observation and sampling to answer this question.
Document review
Document review can help you understand what current system process models. So you should obtain documentation of process models, such as copies of actual forms and operating documents and samples of actual completed forms. You should check that the documentation of process models is out of date.
Observation
Observation can help you make a better understanding of current system process models. In addition, you may discover that neither the documentation of process models nor the interview statements are precise.
Sampling
Sampling help you collect examples of process models. It includes records of process models, operational logs, data entry documents of process models and so on.
Questionnaires and surveys and research can not use to answer this question because in this system analysis phase, process models can not be surveyed and researched.
What textbooks, journals and/or websites might be useful to search for articles about discussing data and process models?
Shelly et al. (2006) is useful to discuss data and process models.
Reference List:
Shelly, G, Chasman, T, & Rosenblatt, H 2006, System analysis and design, 6th edn, Thomson Course Technology, Boston
Tags: Week 3
