Information retrieval means, as well as searching literature (Literature searching), which refers to the process ค้นเอกสาร. To obtain documents related to a particular subject. The principle of information retrieval is to find and get the information that meets the requirements. Sent to users quickly through. Any system that has been designed to facilitate the search of publications, the so called system product information night. For example, catalog. Publication index, etc. knowledge cannot transfer from one person to another person directly, always. It has a collection of knowledge, information system, which is a system that acts gather, store, and the information used in enterprise system serves as a channel. (Channel) of the information system consists of people, equipment, and process often, people often think's information system that consists of a computer system. And Databases information storage database (), which is responsible to collect information from various sources and keeping them organized in the database. Information is communicated in the form of one consists of a message from one source to แหล่งหนึ่ง between a message substance have quality to the recipient. Depending on how many interference (Noise) which impeding information system. Do not meet the requirements as far as possible. Information can be divided state requirements.
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