Database Management Basics

Database management is a method of managing the information that a company needs to run its business operations. It involves storing data, disseminating it to applications and users and editing it when needed as well as monitoring changes in data and preventing data corruption due to unexpected failure. It is a component of the overall informational infrastructure of a business that aids in decision-making in corporate growth, as well as compliance with laws like the GDPR and the California Consumer Privacy Act.

The first database systems were created in the 1960s by Charles Bachman, IBM and others. They evolved into information management systems (IMS), which allowed massive amounts of data to be stored and retrieved for a variety of purposes. From calculating inventory to supporting complicated financial accounting functions, and human resource functions.

A database is a set of tables which organize data according to a certain scheme, like one-to many relationships. It uses primary keys to identify records and allow cross-references between tables. Each table is comprised of a set of fields, referred to as attributes, that provide information about data entities. The most well-known kind of database is a relational model, developed by E. F. “Ted” Codd at IBM in the 1970s. This design is based on normalizing data to make it easier to use. It is also simpler to update data because it doesn’t require the modification of various databases.

Most DBMSs can accommodate multiple database types by providing different levels of internal and external 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 in user interfaces and applications. It could comprise a mix of external views based on different data models. It can include virtual tables that are calculated with generic data to enhance the performance.

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