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Database Management Basics
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Database management is a method for managing the data that a company needs to run its business operations. It involves storing data, distributing it to applications and users making edits as needed and monitoring changes to the data and protecting against data corruption 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.
The first database systems were created in the 1960s by Charles Bachman, IBM and others. They evolved into the information management systems (IMS) that allowed for the storage and retrieve huge amounts of data for a variety of purposes, from calculating inventory to supporting complicated human resources and financial accounting functions.
A database is a set of tables that organizes data in accordance with the specific scheme, for example one-to-many relationships. It utilizes primary key to identify records and allows cross-references among tables. Each table is comprised of a variety of fields, called attributes, that provide information about the data entities. Relational models, developed by E. F. “TedCodd Codd in the 1970s at IBM as a database, are the most well-known database type today. This model is based upon normalizing the data, making it simpler to use. It also makes it simpler to update data without the need to change several databases.
Most DBMSs support multiple types of databases through different levels of external and internal organization. The internal level addresses cost, scalability and other operational concerns like the layout of the database’s physical storage. The external level focuses on how the database appears in user interfaces and other applications. It could comprise a mix of different external views that are based on different data models. It could include virtual tables that are computed using generic data in order to improve the performance.
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