Database Management Basics

Database management is a method for managing the data that supports a company’s business operations. It involves storing data, disseminating it to applications and users and editing it as required and monitoring changes to the data and protecting against data corruption due to unexpected failure. It is part of the entire informational infrastructure of a company which supports decision-making and corporate growth as well as compliance with laws such as the GDPR and the California Consumer Privacy Act.

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

A database consists of tables that arrange data according to some schema, such as one-to many relationships. It uses the primary key to identify records, and also allows cross-references among tables. Each table is comprised of a variety of fields, known as attributes, that contain information about the data entities. Relational models, developed by E. F. “TedCodd Codd in the 1970s at IBM as a database, are the most popular database type in the present. This model is based on normalizing the data, making it more easy to use. It also makes it simpler to update data without the need to update various databases.

The majority of DBMSs support a variety of databases, offering internal and external levels of organization. The internal level focuses on costs, scalability, and other operational concerns including the design of the database’s physical storage. The external level determines how the database is represented in user interfaces and other applications. It can include a mixture of external views based on different data models. It also can include virtual tables that are computed using generic data in order to improve the performance.

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