The term database first emerged in 1963. In principle, a database is a set of information, but for this information to be considered a database it must meet a series of characteristics and requirements regarding its content. and structure.
A database is, therefore, a set of information that meets a series of characteristics in order to be considered as such: first, the database must have this information structured and grouped. In addition, the data must belong to the same context and be stored in a way that allows it to be used later.
Databases are often used in the workplace and in , for example when storing employment information about the employees of a company or to manage a portfolio of clients, although its use is extended to practically any imaginable field.
The databases can be classified according to two criteria, such as their content and their variability:
Databases based on their content
Based on the content, the databases can be classified into four types:
- Full text databases. They are databases that store primary sources of complete information.
- Directory databases. These databases contain information such as phone numbers and records or similar listings.
- Biographical databases. It contains information related to the biography of the authors, as well as a summary or extract of their publications.
- Chemical and biological databases. These databases include chemical and biological records.
Databases based on their variability
Based on their variability, databases can be classified into two types.
- Dynamic databases. Your data is periodically modified and updated. They are databases that can be consulted and edited.
- Static databases. These databases are for reading and consulting only. Your data is not regularly modified.