Database Management Basics

Database management is a system for managing the data that supports a business’s operations. It involves storing data, distributing it to users and applications, editing it as needed and monitoring changes to the data and preventing data corruption due to unexpected failure. It is an element of a company’s overall informational infrastructure that aids in decision-making and growth of the company as well as compliance with 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 developed into information management systems (IMS) which allowed large amounts data to be stored and retrieved for a range of reasons. From calculating inventory, to aiding complicated financial accounting functions, and human resource functions.

A database is a set of tables that store data according to a certain scheme, like one-to many relationships. It uses the primary key to identify records and allow cross-references between tables. Each table is comprised of a set of fields called attributes that contain information about data entities. The most well-known type of database that is currently in use is a relational model created by E. F. “Ted” Codd at IBM in the 1970s. This design is based upon normalizing data to make it more user-friendly. It also makes it simpler to update data without the need to modify various databases.

Most DBMSs support multiple types of databases by offering different internal and external levels of organization. The internal level is focused on cost, scalability, and other operational issues, including the physical layout of the database. The external level is how the database is displayed in user interfaces and other applications. It could include a mix of external views based on different data models. It also may also include virtual tables that are computed using elitecorporativa.com.br generic data to enhance the performance.

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