Wiki is a knowledge-base which consists by a collection of web pages that can be informed by their users in a very simple quick way just as we write in a text processor. The recording of this kind of knowledge is collective and it is possible that a lot of individuals could simultaneously contribute to the writing or the correction of one and only article.

The databases (Wiki) are often used as services of bigger websites or as supporting tools in professional activities. A basic example of such a base is the electronic encyclopedia, Wikipedia.

The use of databases in enterprises focuses on the benefit of effective "spreading of knowledge" via local Intranets, where the users are connected. The data that they have acquired is recorded intending to be shared among their colleagues.