Авторский блог об управлении
Database management is a method for managing the data that supports a company’s business operations. It involves storing data, distributing it to applications and users, editing it as needed, monitoring data changes, and making sure that data integrity is not compromised due to unexpected failure. It’s a component of an organization’s overall informational infrastructure that aids in decision-making, corporate growth and compliance with laws such as 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 information management systems (IMS) which allowed massive amounts of data to be stored and retrieved for a range of purposes. From calculating inventory to supporting complex financial accounting functions and human resource functions.
A database consists of tables that store data according to some arrangement, like one-to-many relationships. It uses primary key to identify records and allow cross-references between tables. Each table has a set of fields called attributes which provide information about data entities. The most widely used type of database currently is projetoearquitetura.com.br a relational model, designed by E. F. “Ted” Codd at IBM in the 1970s. The design is based on normalizing the data, making it more easy to use. It is also easier to update data because it does not require the changing of several databases.
The majority of DBMSs support a variety of databases by providing different internal and external levels of organization. The internal level is concerned with costs, scalability and other operational issues like the physical layout of the database. The external level focuses on how the database is represented in user interfaces and other applications. It can include a mixture of different external views that are based on different data models. It also can include virtual tables that are computed using generic data to enhance the performance.