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Database Management Basics

Database management is a method of managing the information that supports a business’s operations. It includes data storage, distributing it to applications and users and then modifying it if necessary as well as monitoring changes to the data and preventing it from getting damaged by unexpected failures. It is one component of a company’s overall informational infrastructure that aids in decision-making, corporate growth and compliance with laws such as the GDPR and the California Consumer Privacy Act.

The first database systems were created in the 1960s by Charles Bachman, IBM and others. They developed into information management systems (IMS), which allowed large amounts data to be stored and retrieved for a range of reasons. From calculating inventory to aiding complex financial accounting functions and human resource functions.

A database consists of a set of tables that store data according to a certain schema, such as one-to many relationships. It utilizes primary keys to identify records and permit cross-references between tables. Each table has a set of fields, referred to as attributes, which provide information about data entities. The most well-known type of database currently is a relational model, created by E. F. “Ted” Codd at IBM in the 1970s. This design is based upon normalizing data to make it more user-friendly. It is also easier to update data since it does not require changing many sections of the databases.

The majority of DBMSs support a variety of databases, offering internal and external levels of organization. The internal level is concerned with cost, scalability and other operational concerns including the design of the database’s physical storage. The external level is how the database appears in user interfaces and other applications. It can include a mixture of different external views based on different data models. It also may include virtual table that are calculated with generic data to enhance the performance.

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