Database Management Basics

Database management is the process for managing information that supports the business operations of an organization. It involves storing data, distributing it to users and applications, editing it as needed as well as monitoring changes in data and stopping data corruption due unexpected failure. It is an element of a company’s informational infrastructure, which supports decision-making and corporate growth, as well as 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 developed into information management systems (IMS) that allowed the storage and retrieve huge amounts of information for a range of purposes, ranging from calculating inventory to supporting complicated financial accounting and human resources functions.

A database is a collection of tables that organizes data according to a specific pattern, such as one-to many relationships. It uses primary keys to identify records and permit cross-references between tables. Each table contains a set of fields, referred to as attributes, that provide information about data entities. Relational models, invented by E. F. ‚ÄúTedCodd Codd in the 1970s at IBM, are the most well-known database type today. This model is based on normalizing the data, making it more easy to use. It is also simpler to update data since it doesn’t require changing many sections of the databases.

The majority of DBMSs are able to support different types of databases by offering different levels of internal and external organization. The internal level is concerned with costs, scalability, and other operational issues like the design of the database’s physical storage. The external level is the representation of the database in user interfaces and applications. It can include a combination of different external views (based on the various data models) and could also include virtual tables that are computed from data that is generic to enhance performance.