Database Management Basics

Database management is a system of managing information that supports a business’s operations. It involves storing data, distributing it to users and application programs, modifying it as necessary and monitoring the changes in the data and preventing it from being corrupted due to unexpected failure. It is part of the entire informational infrastructure of a company that supports decision making, corporate growth, and compliance with laws like the GDPR and California Consumer Privacy Act.

In the 1960s, Charles Bachman and IBM along with others created the first database systems. They developed 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 complex financial accounting functions as well as human resource functions.

A database consists of tables that arrange data in accordance with a specific arrangement, like one-to-many relationships. It uses primary key to identify records and permits cross-references among tables. Each table has a collection of attributes or fields that provide information about data entities. Relational models, which were developed by E. F. “Ted” Codd in the 1970s at IBM, are the most popular database type today. The design is based on normalizing the data, making it simpler to use. It also makes it easier to update data by avoiding the necessity of changing several databases.

Most DBMSs can accommodate various types of databases, by providing different levels of internal and external organization. The internal level focuses on costs, scalability, and other operational concerns, such as the layout of the physical storage. The external level determines how the database is presented in user interfaces and other applications. It can include a mixture of various external views based on different data models and could include virtual tables that are calculated using generic data to enhance the performance.

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