Database management is a method of managing information that supports a business’s operations It involves storing data, disseminating it to applications and users, editing it as needed as well as monitoring changes in data and making sure that data integrity is not compromised due to unexpected failure. It is part of the overall informational infrastructure of a company that assists in decision making in corporate growth, as well as compliance with laws like the GDPR and California Consumer Privacy Act.

In the 1960s, Charles Bachman and IBM along with other companies developed the first database systems. They evolved into information management systems (IMS) which allowed huge amounts of data to be stored and retrieved for a variety of reasons. From calculating inventory, to supporting complex financial accounting functions and human resource functions.

A database consists of a set of tables that store data according to a certain arrangement, like one-to-many relationships. It utilizes primary key to identify records and allows cross-references between tables. Each table is comprised of a variety of fields, known as attributes, that provide information about the data entities. Relational models, which were developed by E. F. “TedCodd Codd in the 1970s at IBM and IBM, are the most popular database type in the present. This model is based upon normalizing the data, making it easier to use. It is also easier to update data because it does not require the changing of many sections of the databases.

Most DBMSs are able to support different types of databases, offering internal and external levels of organization. The internal level is focused on the cost, scalability, and other operational issues, including the physical layout of the database. The external level is the representation of the database on user interfaces and applications. It can include a mixture of different external views based on different models of data and may include virtual table that are calculated using generic data to improve the performance.

Geef een antwoord

Het e-mailadres wordt niet gepubliceerd.