Database Management Basics

Database management is a system for managing information that aids an organization’s business operations. It includes data storage, distributing it to users and applications, modifying it as necessary, monitoring changes in the data and preventing it from becoming corrupted by unexpected failures. It is an element of a company’s overall informational infrastructure that aids in decision-making and corporate growth, as well as compliance with laws like the GDPR and the California Consumer Privacy Act.

The first database systems were created in the 1960s by Charles Bachman, IBM and others. They evolved into information management systems (IMS) which made it possible to store and retrieve large amounts data for a variety of purposes, from calculating inventory to supporting complex human resources and financial accounting functions.

A database is tables that arrange data in accordance with a specific scheme, such as one-to-many relationships. It utilizes primary key to identify records and allows cross-references among tables. Each table has a variety of fields, referred to as attributes, that represent facts about the data entities. The most well-known kind of database is a relational model, developed by E. F. “Ted” Codd at IBM in the 1970s. The design is based on normalizing the data, making it more easy to use. It also makes it easier to update data, avoiding the need to change many sections of the database.

The majority of DBMSs are able to support various types of databases, by providing different levels of internal and external organization. The internal level focuses on cost, scalability and other operational issues including the layout of the database’s physical storage. The external level is the representation of the database on user interfaces and applications. It may include a mix of external views based on different data models. It also may include virtual table that are calculated with generic data to enhance the performance.

Lascia un commento

Il tuo indirizzo email non sarĂ  pubblicato. I campi obbligatori sono contrassegnati *