Database Management Basics

Database management is a method of managing information that a company needs to run its business operations. It involves storing and distributing data it to users and applications and editing it as required and monitoring changes to data and preventing data corruption due to unexpected failure. It is a component of the informational infrastructure of a company that assists in decision making in corporate growth, as well as compliance with laws such as the GDPR and California Consumer Privacy Act.

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

A database is a set of tables that store data in accordance with a certain scheme, like one-to many relationships. It utilizes primary keys to identify records and allow cross-references between tables. Each table contains a number of fields, referred to as attributes, that provide information about the data entities The most well-known kind of database is a relational model, developed by E. F. “Ted” Codd at IBM in the 1970s. This model is based upon normalizing the data, making it easier to use. It also makes it easier to update data without the need to change many sections of the database.

Most DBMSs are able to support different types of databases by providing different internal and external levels of organization. The internal level deals with costs, scalability, and other operational concerns including the layout of the physical storage. The external level focuses on how the database appears in user interfaces and other applications. It could comprise a combination of various external views (based on the various data models) and may also include virtual tables that are constructed from data that is generic to enhance performance.

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