A document is proof of a fact or act done in the exercise of the functions or activities of a person, public or private institution registered in a unit of information of any kind of support such as paper, tapes, magnetic disks, films, photographs, Pictures, sculptures etc.
structured document are those that have a predefined structure that does not change, and the data they contain are clearly identified, these documents have tags which serve as headings for retrieval
unstructured document
are those who do not have a clearly established. Document
Semistructured
are mixed documents containing partly structured and partly unstructured.
is the digital document containing information encoded as binary digits 1 and 0 that can be captured, stored, analyzed, distributed and presented only by a machine. Example
a music CD a document on a USB memory
Electronic Document is a document that requires an electronic device for optimal viewing to be read or played with the aid of detectors magnetization.
Example: a roll of photographs, a virtual document microfiche
is a digital document that simulates a real document, such as a virtual book with which pages can be passed from one screen.
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