Database Management Basics

Database management is a system of coordinating the information that supports a business’s operations. It involves storing data and distribution to users and applications, modifying it as necessary and monitoring the changes in the data and preventing it from being corrupted due to unexpected failures. It is a part of the overall informational infrastructure of a company that supports decision making, corporate growth, and compliance with laws like the GDPR and California Consumer Privacy Act.

The first database systems were invented in the 1960s by Charles Bachman, IBM and others. They developed into information management systems (IMS) which allowed the storage and retrieve massive amounts of data for a variety of uses, from calculating inventory to supporting complicated financial accounting and human resources functions.

A database is a set of tables that store data according to a particular pattern, for example, one-to-many relationships. It utilizes primary key to identify records and allow cross-references between tables. Each table has a set of fields called attributes that represent facts about data entities. The most well-known type of database currently is a relational model, created by E. F. “Ted” Codd at IBM in the 1970s. This design is based upon normalizing data to make it easier to use. It is also easier to update data because it doesn’t require the modification of several databases.

The majority of DBMSs support a variety of databases and offer different internal and external levels of organization. The internal level concerns cost, scalability, as well as other operational issues, like the physical layout of the database. The external level determines how the database is presented in user interfaces and other applications. It could comprise a combination of various external views (based on the various data models) and could also include virtual tables that are created using generic data to improve performance.

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