Database management is the method for managing information that supports the company’s business operations. It involves storing data and distribution to applications and users making changes as needed and monitoring the changes in the data and preventing it from getting corrupted by unexpected failure. It is one component of a company’s total 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.
In the 1960s, Charles Bachman and IBM among others developed the first database systems. They developed into information management systems (IMS), which allowed huge amounts of data to be stored and retrieved for a range of reasons. From calculating inventory, to supporting complex financial accounting functions as well as human resource functions.
A database consists of tables that organize data in accordance with a specific arrangement, like one-to-many relationships. It uses primary key to identify records and permits cross-references between tables. Each table is comprised of a set of attributes or fields that marcelosantisteban.com.br provide information about data entities. Relational models, created by E. F. “Ted” Codd in the 1970s at IBM and IBM, are the most popular database type today. This model is based on normalizing the data, making it simpler to use. It is also simpler to update data because it does not require the changing of various databases.
Most DBMSs are able to support different types of databases, offering internal and external levels of organization. The internal level is focused on cost, scalability, as well as 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 can include a combination of different external views (based on the different data models) and could also include virtual tables that are created from data that is generic to enhance performance.