It is associated with data, as data represents values attributed to parameters, and information is data in context and with meaning attached. Information relates also to knowledge, as knowledge signifies understanding of an abstract or concrete concept.
In terms of communication, information is expressed either as the content of a message or through direct or indirect observation. That which is perceived can be construed as a message in its own right, and in that sense, information is always conveyed as the content of a message.
Information can be encoded into various forms for transmission and interpretation (for example, information may be encoded into a sequence of signs, or transmitted via a signal). It can also be encrypted for safe storage and communication.
The uncertainty of an event is measured by its probability of occurrence and is inversely proportional to that. The more uncertain an event, the more information is required to resolve uncertainty of that event.
The concept of information has different meanings in different contexts. Thus the concept becomes related to notions of constraint, communication, control, data, form, education, knowledge, meaning, understanding, mental stimuli, pattern, perception, representation, and entropy.
In 1972, the United Nations General Assembly decided to institute a World Development Information Day coinciding with United Nations Day on October 24. The General Assembly had the object of drawing the attention of world public-opinion each year to development problems and the necessity of strengthening international co-operation to solve them.
The day was further recognized as the date on which the International Development Strategy for the Second Nations Development Decade was adopted in 1970.
On May 17, 1972, the UN Conference on Trade and Development (UNCTAD) proposed measures for information dissemination and for the mobilization of public opinion relative to trade and development problems. These became known as resolution 3038 which the UN General Assembly passed on December 19, 1972. This resolution called for introducing World Development Information Day to help draw the attention of people worldwide to development problems. A further aim of the event is to explain to the general public why it is necessary to strengthen international cooperation to find ways to solve these problems. The assembly also decided that the day should coincide with United Nations Day to stress the central role of development in the UN's work. World Development Information Day was first held on October 24, 1973, and has been held on this date each year since then.
In recent years many events have interpreted the title of the day slightly differently. These have concentrated on the role that modern information-technologies, such as the Internet and mobile telephones free from digital divide can play in alerting people and finding solutions to problems of trade and development. One of the specific aims of World Development Information Day was to inform and motivate young people and this change may help to further this aim.