The concept of a data bank is one that is used to refer to a set of data, of information that is grouped and kept in the same medium in order to facilitate its access. When we speak of a data bank we are pointing out that this information is classified and ordered according to different parameters since it can be requested very often for various purposes. We could say that a data bank is something much more common than it seems, a library file, a cookbook or an index of a book could be considered in general terms different forms of data bank since each one orders and classifies knowledge according to methods that are relevant and that help to find more easily what you are looking for. However, in more specific terms and in relation to the importance that technology has today, the idea of a data bank is usually applied to computer systems that store information and that allow users to access that data easily.
One of the most important elements that a database must have is a clear and effective system for organizing and classifying them. This is so since the ultimate purpose of the data bank is the order of data that would otherwise be clearly disordered, chaotically stored and that, when necessary, could not be easily found.
Banks or databases can have different characteristics, some of them being static and others dynamic. Static databases are those that are made with information that changes very little or that does not change directly because it is something that is no longer going to be modified. These databases are known as read-only databases. The second possibility, the most common, is the dynamic type database, one that varies over time and that may be due to its alteration to the permanent input or output of data from the source (for example, the database that a pharmacy has about the availability of medicines in stock).
