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From Latin datum ("What is given" ), a fact is a document , a information or a testimony that allows to get to know something or deduce the legitimate consequences of a fact. For example: “We have discovered the murderer thanks to the data provided by a witness”.

It is important to keep in mind that the data does not make sense in itself, but is used in decision making or calculations based on proper processing and taking into account its context . Usually the data is a symbolic representation or a attribute of an entity .

In the field of the humanities, data is considered as a minimum content expression Regarding a subject. The set of related data constitutes information.

In this sense it is interesting that we make known the existence of what is known as a database. This is a term that is used to refer to the set of information that on a given subject has been collected and that can be used by several people.

It is important to underline, in addition to all of the above, that throughout the world geography there are a number of countries that use the term data with another meaning. Specifically, these are nations of the East that when they talk about data are referring to a title of high esteem and dignity.

Nor can we ignore the existence of an especially important concept at this time in our society. We are referring to what is known as data protection. This expression refers to a system, of a legal nature, which prevents the personal data of citizens who are held by any of the Public Administration bodies from being disclosed, that is, that the barrier of Confidentiality with them.

So important is this fact that currently in Spain there is what is known as the Spanish Agency for Data Protection. In general, its basic function is to ensure at all times the fulfillment of the law that exists on said matter. However, then it is also responsible for responding to citizens' claims, for exercising a sanctioning power or for establishing certain security guidelines and recommendations.

For the computing , the data is general expressions that describe characteristics of the entities on which the algorithms operate. These expressions must be presented in a certain way so that they can be treated by a computer . In this case, the data alone does not constitute information, but it arises from the proper processing of the data.

It is known as database (or database, according to the English term) to all the data that belong to the same context and that are systematically stored so that they can be used in the future. These databases can be static (when stored data does not vary despite the passage of time) or dynamic (the data is modified over time; these bases, therefore, require periodic updates).

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