Database Management Basics

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Database management is a system for managing data that supports the company’s business operations. It involves storing and distributing data it to users and applications and editing it when needed as well as monitoring changes in data and stopping data corruption due unexpected failure. It’s a component of a company’s informational infrastructure which aids in decision making and corporate growth, as well as 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 the information management systems (IMS) that allowed the storage and retrieve huge amounts of data for a wide range of purposes, from calculating inventory to supporting complicated financial accounting and human resources functions.

A database is a set of tables which organize data according to an established pattern, such as one-to many relationships. It makes use of primary keys to identify records, and also allows cross-references among tables. Each table has a set of fields, known as attributes, that contain information about the data entities. The most well-known type of database that is currently in use is a relational model developed by E. F. “Ted” Codd at IBM in the 1970s. This design is based on normalizing the data, making it simpler to use. It is also easier to update data since it doesn’t require changing many sections of the databases.

Most DBMSs are able to support different types of databases and offer different internal and external levels of organization. The internal level is concerned with cost, scalability and other operational issues such as the layout of the database’s physical storage. The external level determines how the database is represented in user interfaces and other applications. It could comprise a combination of various external views (based on the various data models) and may include virtual tables that are created using generic data to improve performance.

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