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Database Management Basics

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

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

A database is a set of tables that organizes data in accordance with the specific scheme, for example one-to-many relationships. It utilizes primary keys to identify records, and allow cross-references between tables. Each table has a collection of fields called attributes that contain information about data entities. Relational models, developed by E. F. “TedCodd Codd in the 1970s at IBM and IBM, are among the most popular database type in the present. This design is based upon normalizing data to make it more user-friendly. It is also simpler to update data because it does not require the changing of various databases.

Most DBMSs can accommodate multiple database types by providing different levels of internal and external organization. The internal level deals with the cost, scalability, and other operational issues, like the physical layout of the database. The external level focuses on how the database is displayed in user interfaces and other applications. It may include a mix of different external views that are based on different data models and could include virtual tables that are computed using generic data in order to improve the performance.