Database Management Basics

Database management is a method of coordinating the information that supports a company’s business operations. It involves storing and distributing data it to applications and users making edits as needed and monitoring changes to the data and preventing data corruption due to unexpected failure. It is an integral part of the entire informational infrastructure of a company which supports decision-making as well as corporate growth and compliance with laws like the GDPR and California Consumer Privacy Act.

In the 1960s, Charles Bachman and IBM along with other companies developed the first database systems. They developed into information management systems (IMS) which allowed large amounts data to be stored and retrieved for a variety of reasons. From calculating inventory, to aiding complicated financial accounting functions, and human resource functions.

A database is a collection of tables that arrange data in accordance with a certain scheme, like one-to-many relationships. It utilizes primary key to identify records, and also allows cross-references among tables. Each table has a collection of attributes, or fields, which provide information about data entities. The most well-known type of database currently is a relational model, designed by E. F. “Ted” Codd at IBM in the 1970s. The concept is based on normalizing data to make it easier to use. It also makes it simpler to update data by avoiding the need to modify different sections of the database.

Most DBMSs can support different types of databases by offering different levels of external and internal organization. The internal level is concerned with costs, scalability and other operational issues, including the physical layout of the database. The external level focuses on how the database appears in user interfaces and other applications. It could include a mix of various external views (based on different data models) and may also include virtual tables which are generated from data that is generic to enhance performance.

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