Database Management Basics

Database management is the system for managing information that supports the organization’s business processes. It includes data storage and distribution to users and applications, modifying it as necessary as well as monitoring changes to the data and preventing the data from becoming corrupted by unexpected failures. It is an element of a company’s overall 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 developed the first database systems. They evolved into information management systems (IMS) that enabled the storage and retrieve huge amounts of information for a range of purposes, from calculating inventory to supporting complex financial accounting and human resources functions.

A database is a set of tables that arrange data according to a particular pattern, for example, one-to-many relationships. It makes use of primary keys to identify records and permits cross-references among tables. Each table is comprised of a variety of fields, also known as attributes, that contain information about the data entities. Relational models, which were developed by E. F. “TedCodd Codd in the 1970s at IBM and IBM, are among the most well-known database type today. This design is based on normalizing data to make it more user-friendly. It is also easier to update data because it doesn’t require changing several databases.

Most DBMSs are able to support different types of databases by offering different internal and external levels of organization. The internal level is focused on costs, scalability and other operational issues, such as the physical layout of the database. The external level determines how the database is presented in user interfaces and other applications. It could comprise a mix of various external views based on different data models. It may also include virtual tables that are computed with generic data to enhance the performance.

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