Database Management Basics

Database management is a method of managing information that supports a company’s business operations. It involves storing data, distributing it to users and applications and editing it as required, monitoring data changes, and making sure that data integrity is not compromised due to unexpected failure. It is a component of the overall infrastructure of a company that supports decision making as well as corporate growth and compliance with laws like the GDPR and the California Consumer Privacy Act.

The first database systems were invented in the 1960s by Charles Bachman, IBM and others. They evolved into information management systems (IMS) that enabled the storage and retrieve massive amounts of information for a range of uses, from calculating inventory to supporting complicated human resources and financial accounting functions.

A database is a collection of tables that store data according to a specific pattern, such as one-to-many relationships. It makes use of primary keys to identify records and allows cross-references between tables. Each table contains a set of fields called attributes that provide information about data entities. Relational models, which were developed by E F. “TedCodd Codd in the 1970s at IBM as a database, are the most popular database type currently. This design is based on normalizing the data, making it simpler to use. It is also simpler to update data because it doesn’t require changing certain sections of the database.

Most DBMSs are able to support different types of databases, offering internal and external levels of organization. The internal level is concerned with the cost, scalability, and other operational issues, such as the physical layout of the database. The external level determines how the database is displayed in user interfaces and other applications. It can include a mixture of different external views that are based on different models of data and could include virtual tables that are computed with generic data to enhance the performance.

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