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Database Management Basics

Database Management Basics

Database management is a method of coordinating the information that supports a business’s operations. It involves storing data, distributing it to applications and users and editing it when needed as well as monitoring changes in data and protecting against data corruption due to unexpected failure. It is a part of the informational infrastructure of a company which supports decision-making and corporate growth as well as compliance with laws like 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 allowed the storage and retrieve huge amounts of data for a wide range of uses, from calculating inventory to supporting complex financial accounting and human resources functions.

A database consists of tables that store data according to some arrangement, like one-to-many relationships. It makes use of primary keys to identify records and allow cross-references between 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 today is a relational model created by E. F. “Ted” Codd at IBM in the 1970s. This design is based on normalizing the data, making it easier to use. It also makes it simpler to update data since it eliminates the need to update different sections of the database.

Most DBMSs can accommodate different types of databases by offering different levels of internal and external organization. The internal level deals with the cost, scalability, and other operational issues, including the physical layout of the database. The external level is the representation of the database on user interfaces and applications. It could comprise a combination of various external views (based on different data models) and may also include virtual tables that are constructed from generic data in order to improve performance.