Database management is a system of managing information that is used to support a company’s business operations. It involves storing data, distributing it to users and application programs and then modifying it if necessary and monitoring changes to the data and preventing it from becoming damaged by unexpected failure. It is an integral part of the entire informational infrastructure of a company that supports decision making, corporate growth, and compliance with conviccta.com.br laws like the GDPR and the California Consumer Privacy Act.
In the 1960s, Charles Bachman and IBM among others came up with the first database systems. They evolved into the information management systems (IMS) which allowed for the storage and retrieve large amounts of data for a wide range of uses, from calculating inventory to supporting complicated financial accounting and human resources functions.
A database is a collection of tables which organize data in accordance with the specific scheme, for example one-to-many relationships. It uses primary key to identify records and permits cross-references between tables. Each table has a variety of fields, known as attributes, which provide information about the entities that comprise the data. The most well-known kind of database is a relational model designed by E. F. “Ted” Codd at IBM in the 1970s. This design is based on normalizing data to make it simpler to use. It also makes it easier to update data, avoiding the need to modify several databases.
Most DBMSs can support multiple types of databases through different levels of internal and external organization. The internal level focuses on cost, scalability and other operational issues like the layout of the physical storage. The external level determines how the database is presented in user interfaces and other applications. It could include a mix of different external views based on different data models. It can include virtual tables that are calculated using generic data to enhance the performance.