Database Management Basics

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Database management is the method to manage information that is essential to the organization’s business processes. It involves storing and distributing data it to applications and users, editing it as needed and monitoring changes to data and making sure that data integrity is not compromised due to unexpected failure. It is an element of an organization’s overall informational infrastructure, which supports decision-making and growth for the business as well as compliance with laws like the GDPR and the 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 massive amounts of data to be stored and retrieved for a range of reasons. From calculating inventory to aiding complicated financial accounting functions, and human resource functions.

A database consists of tables that arrange data according to some scheme, such as one-to-many relationships. It uses the primary key to identify records and allow cross-references between tables. Each table has a variety of fields, referred to as attributes, which provide information about the entities that comprise the data. The most popular type of database today is a relational model, created by E. F. “Ted” Codd at IBM in the 1970s. The design is based on normalizing the data, making it more easy to use. It is also simpler to update data because it does not require the changing of many sections of the databases.

The majority of DBMSs support a variety of databases, offering internal and external levels of organization. The internal level deals with the cost, scalability, and other operational issues like the physical layout of the database The external level is the representation of the database in user interfaces and applications. It could include a mix of different external views based on different data models. It also may also include virtual tables that are calculated using generic data to enhance the performance.

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