Database Management Basics Leave a comment
Database management is a system for managing data that supports the company’s business operations. It involves storing and distributing data it to users and applications and editing it when needed as well as monitoring changes in data and protecting against data corruption due to unexpected failure. It’s a component of a company’s overall informational infrastructure which aids in decision making, corporate growth and compliance with laws such as the GDPR and the California Consumer Privacy Act.
The first database systems were developed in the 1960s by Charles Bachman, IBM and others. They evolved into information management systems (IMS) which made it possible to store and retrieve massive amounts of data for a wide range of purposes, from calculating inventory to supporting complex financial accounting and human resources functions.
A database consists of tables that organize data according to a particular pattern, for example, one-to-many relationships. It uses primary keys to identify records and allows cross-references between tables. Each table has a collection of attributes, or fields, that provide information about data entities. The most well-known kind of database is a relational model, created by E. F. “Ted” Codd at IBM in the 1970s. This design is based on normalizing the data, making it simpler to use. It also makes it simpler to update data without the need to change many sections of the database.
The majority of DBMSs are able to support multiple database types by providing different levels of external and internal organization. The internal level is focused on cost, scalability, as well as other operational issues, such as the physical layout of the database. The external level focuses on how 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 include virtual tables that wincare.vn are constructed using generic data to improve performance.
