Database Management Basics

Database management is the process for managing information that aids the business operations of an organization. It involves storing data and distribution to application programs and users and modifying it as needed and monitoring the changes in the data and preventing it from becoming corrupted by unexpected failure. It is a part of the informational infrastructure of a company that supports decision making and corporate growth as well as compliance with laws such as the GDPR and California Consumer Privacy Act.

The first database systems were developed in the 1960s by Charles Bachman, IBM and others. They developed into information management systems (IMS), which allowed massive amounts of data to be stored and retrieved for a range of reasons. From calculating inventory to supporting complicated financial accounting functions, and human resource functions.

A database is tables that are organized according to a certain schema, such as one-to many relationships. It makes use of primary keys to identify records, and also allows cross-references among tables. Each table has a set of attributes or fields that represent facts about data entities. Relational models, created by E. F. “Ted” Codd in the 1970s at IBM as a database, are the most popular database type currently. This design is based on normalizing data to make it simpler to use. It also makes it simpler to update data since it eliminates the necessity of changing different sections of the database.

The majority of DBMSs are able to support multiple types of databases through different levels of internal and external organization. The internal level concerns costs, scalability and other operational issues, such as the physical layout of the database. The external level is the representation of the database on user interfaces and applications. It could comprise a mix of external views based on different models of data and may include virtual table that are calculated using generic data to enhance the performance.

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