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Among genealogists, a primary source comes from a direct witness, a secondary source comes from second-hand information or hearsay told to others by witnesses, and tertiary sources can represent either a further link in the chain or an analysis, summary, or distillation of primary and/or secondary sources. In this system, an elderly woman's ...
Information is an abstract concept that refers to something which has the power to inform. At the most fundamental level, it pertains to the interpretation (perhaps formally) of that which may be sensed, or their abstractions. Any natural process that is not completely random and any observable pattern in any medium can be said to convey some ...
This wall painting found in the Roman city of Pompeii is an example of a primary source about people in Pompeii in Roman times (portrait of Terentius Neo).. In the study of history as an academic discipline, a primary source (also called an original source) is an artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time ...
Information retrieval ( IR) in computing and information science is the task of identifying and retrieving information system resources that are relevant to an information need. The information need can be specified in the form of a search query. In the case of document retrieval, queries can be based on full-text or other content-based indexing.
Information theory is the mathematical study of the quantification, storage, and communication of information. The field was established and put on a firm footing by Claude Shannon in the 1940s, [1] though early contributions were made in the 1920s through the works of Harry Nyquist and Ralph Hartley. It is at the intersection of electronic ...
In information science and information technology, single source of truth ( SSOT) architecture, or single point of truth ( SPOT) architecture, for information systems is the practice of structuring information models and associated data schemas such that every data element is mastered (or edited) in only one place, providing data normalization ...
An information system is a form of communication system in which data represent and are processed as a form of social memory. An information system can also be considered a semi- formal language which supports human decision making and action. Information systems are the primary focus of study for organizational informatics.
Information literacy. The Association of College and Research Libraries defines information literacy as a "set of integrated abilities encompassing the reflective discovery of information, the understanding of how information is produced and valued and the use of information in creating new knowledge and participating ethically in communities ...