This example also illustrates the use of the abbreviations

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These abbreviations facilitate the preparation of note references using standard word processors. Note references in IDEF0 text and written correspondence are examples of text references. B.3 Data Collection for IDEF Modeling B.3.1 Introduction When analyzing or designing any system, there may be a need to obtain or verify facts about the system or object of study. There are many sources of factual information. You can choose the following path: Read existing documents using the table of contents and index to find the information you need.

Observe the system in action if it already exists. To survey armenia whatsapp number data a large group of people using questionnaires or other similar means. Talk to one or more experts who have the knowledge you need. Use what the developer already knows. Suggest or create a hypothetical description and ask readers to help make it more realistic. Of all these methods, the most important is face-to-face interaction with the expert. Rarely is all the information available in documents. Preconceived notions reflected in questionnaires are often wrong. A key part of interviewing is recording the information obtained.

This can be done either in the form of informal notes, or in the form of lists of actions and data/objects, or in the form of formalized matrix of functions, or in the form of sketches of diagrams. B.3.2 Survey process The purpose of the interview is to gather information from a person with expert knowledge that is considered important to the analysis work. There are four types of interviews that can be conducted during the Analysis phase of an IDEF project. Fact-finding to understand current operations. This type of interview is used to establish the content of the current operating model or to understand the existing environment.