Database Management Basics

Database management is a system of managing the information that supports a business’s operations. It involves storing data, disseminating it to users and applications, editing it as needed and monitoring changes to the data and protecting against data corruption due to unexpected failure. It is part of the 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 other companies developed the first database systems. They developed into information management systems (IMS) which enabled the storage and retrieve huge amounts of data for a broad range of purposes, from calculating inventory to supporting complicated human resources and financial accounting functions.

A database is a collection of tables that arrange data according to a certain scheme, like one-to many relationships. It utilizes primary key to identify records and permits cross-references between tables. Each table contains a number of fields, called attributes, that provide information about the data entities. Relational models, created by E. F. “TedCodd Codd in the 1970s at IBM, are the most popular database type today. This model is based on normalizing the data, making it more easy to use. It is also easier to update data because it doesn’t require the modification of several databases.

The majority of DBMSs support a variety 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 determines how the database is presented in user interfaces and other applications. It can include a mixture of different external views that are based on different data models and could include virtual tables that are calculated with generic data to enhance the performance.

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