Database Management Basics

Database management is a system for managing the data that is used to support a company’s business operations. It includes data storage and distribution to application programs and users making changes as needed and monitoring changes to the data and preventing it from getting corrupted due to unexpected failures. It is a part of an organization’s overall informational infrastructure which aids in decision making, corporate growth and 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) that allowed the storage and retrieve large amounts data for a broad range of purposes, ranging from calculating inventory to supporting complicated human resources and financial accounting functions.

A database is a set of tables that organizes data in accordance with a specific pattern, such as one-to many relationships. It uses primary keys to identify records and allows cross-references between tables. Each table has a variety of fields, also known as attributes, that contain information about the data entities. Relational models, which were developed by E. F. “Ted” Codd in the 1970s at IBM and IBM, are among the most well-known database type today. This model is based upon normalizing the data, making it more easy to use. It is also easier to update data because it does not require the changing of various databases.

Most DBMSs are able to support different types of databases and offer different internal and external levels of organization. The internal level is concerned with costs, scalability, and other operational concerns like the layout of the database’s physical storage. The external level focuses on how the database is displayed in user interfaces and other applications. It could include a mix of various external views (based on the various data models) and can also include virtual tables which are generated from generic data to improve performance.

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