Database Management Basics

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

In the 1960s, Charles Bachman and IBM along with others created the first database systems. They evolved into information management systems (IMS) that enabled the storage and retrieve large amounts of data for a wide range of purposes, ranging from calculating inventory to supporting complicated financial accounting and human resources functions.

A database is tables that are organized according to some arrangement, like one-to-many relationships. It utilizes primary keys to identify records and allow cross-references between tables. Each table contains a set of attributes, or fields, that represent facts about data entities. Relational models, created by E. F. “Ted” Codd in the 1970s at IBM as a database, are the most well-known database type in the present. This design is based upon normalizing data to make it more user-friendly. It is also easier to update data since it doesn’t require the modification of various databases.

Most DBMSs support multiple types of databases through different levels of external and internal organization. The internal level deals with costs, scalability, and other operational concerns such as the layout of the physical storage. The external level is the way the database is presented in user interfaces and other applications. It could comprise a combination of different external views (based on the different data models) and may also include virtual tables which are generated from generic data to improve performance.