Database Management Basics

Database Management Basics

Database management is a method of managing the information that supports a business’s operations. It involves storing data, distributing it to users and applications and then modifying it if necessary and monitoring the changes in the data and preventing the data from becoming damaged by unexpected failure. It is an element of a company’s overall informational infrastructure, which supports decision-making and growth for the business as well as compliance with laws such as 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 the information management systems (IMS) that allowed for the storage and retrieve large amounts data for a wide range of purposes, ranging from calculating inventory to supporting complex financial accounting and human resources functions.

A database consists of a set of tables that store data in accordance with a specific pattern, for example, one-to-many relationships. It uses primary keys to identify records, and allow cross-references between tables. Each table has a set of attributes, or fields, that provide information about data entities. The most popular type of database that is currently in use is a relational model created by E. F. “Ted” Codd at IBM in the 1970s. This model is based on normalizing data to make it simpler to use. It also makes it simpler to update data, avoiding the need to modify many sections of the database.

Most DBMSs can support multiple database types by providing different levels of internal and external organization. The internal level deals with costs, scalability, and other operational issues, such as the layout of the physical storage. The external level is the representation of the database in user interfaces and applications. It can include a mixture of different external views that are based on different data models. It could include virtual tables that are calculated using generic data in order to improve the performance.

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