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Database Management Basics

Database management is the method for managing information that supports the organization’s business processes. It involves storing data, disseminating it to applications and users and editing it as required, monitoring data changes, and preventing data corruption due to unexpected failure. It is one component of an organization’s overall informational infrastructure that aids in decision-making, corporate growth and compliance with laws like the GDPR and the California Consumer Privacy Act.

The first database systems were developed in the 1960s by Charles Bachman, IBM and others. They evolved into information management systems (IMS) which allowed huge amounts of data to be stored and retrieved for a range of purposes. From calculating inventory to aiding complex financial accounting functions as well as human resource functions.

A database is a set of tables that arrange data in accordance with the specific scheme, for example one-to many relationships www.levallondescigales.fr. It makes use of primary keys to identify records and permit cross-references between tables. Each table has a variety of fields, also known as attributes, that contain information about the data entities. The most popular type of database that is currently in use is a relational model, developed by E. F. “Ted” Codd at IBM in the 1970s. The concept is based on normalizing data to make it more user-friendly. It also makes it simpler to update data, avoiding the need to change different sections of the database.

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

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