dev-kiddosportfolio.pantheonsite.io
Database management is a system for managing the data that a company needs to run its business operations. It includes data storage and distribution to users and application programs, modifying it as necessary and monitoring the changes in the data and preventing the data from becoming damaged by unexpected failure. It is a part of a company’s overall informational infrastructure that aids in decision-making, corporate growth and compliance with laws like 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 information management systems (IMS), which allowed large amounts of data to be stored and retrieved for a range of purposes. From calculating inventory to aiding complex financial accounting functions and human resource functions.
A database is a collection of tables that store data according to a certain scheme, like one-to-many relationships. It utilizes primary keys to identify records and permit cross-references between tables. Each table has a set of fields, also known as attributes, that contain information about the data entities. Relational models, developed by E. F. “Ted” Codd in the 1970s at IBM, are the most widely used type of database currently. This model is based on normalizing data to make it simpler to use. It is also easier to update data since it does not require changing many sections of the databases.
Most DBMSs can accommodate various types of databases, by providing different levels of internal and external organization. The internal level deals with the cost, scalability, and other operational issues, such as the physical layout of the database. The external level is the representation of the database in user interfaces and applications. It could comprise a mix of external views based on different data models and can include virtual tables that are computed using generic data in order to improve the performance.
