Database Management Basics

Database management is a system for managing information that supports the organization’s business processes. It involves storing and distributing data it to users and applications and editing it when needed and monitoring changes to the data and stopping data corruption due unexpected failure. It is an element of a company’s informational infrastructure, which supports decision-making, corporate growth and compliance with laws such as the GDPR and the California Consumer Privacy Act.

In the 1960s, Charles Bachman and IBM among others came up with the first database systems. They evolved into information management systems (IMS) that allowed for the storage and retrieve large amounts of data for a broad range of applications, from the calculation of inventory to supporting complicated human resources and financial accounting functions.

A database is a collection of tables which organize data according to a specific pattern, such as one-to-many relationships. It uses primary keys to identify records and allows cross-references between tables. Each table contains a set of attributes or fields that represent facts about data entities. Relational models, developed by E. F. “TedCodd Codd in the 1970s at IBM and IBM, are among the most popular database type today. This design is based upon normalizing data to make it simpler to use. It is also simpler to update data because it doesn’t require changing many sections of the databases.

Most DBMSs support multiple database types by providing different levels of internal and external organization. The internal level deals with costs, scalability, and other operational issues such as the layout of the physical storage. The external level is the representation of the database on user interfaces and applications. It could comprise a combination of different external views (based on the different data models) and could also include virtual tables that are computed using generic data to improve performance.

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