Database Management Basics

Database management is a system for managing data that supports the company’s business operations. It involves storing data, distributing it to applications and users making edits as needed, monitoring data changes, and protecting against data corruption due to unexpected failure. It’s a component of a company’s total informational infrastructure that aids in decision-making, corporate growth and compliance with laws such as 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) which allowed the storage and retrieve huge amounts of data for a variety of purposes, ranging from calculating inventory to supporting complicated financial accounting and human resources functions.

A database is a set of tables that arrange data according to the specific scheme, for example one-to-many relationships. It uses the primary key to identify records and permits cross-references among tables. Each table has a collection of attributes or fields which provide information about data entities. Relational models, created by E. F. “TedCodd Codd in the 1970s at IBM as a database, are the most widely used type of database currently. This model is based on normalizing data to make it simpler to use. It also makes it simpler to update data by avoiding the necessity of changing various databases.

Most DBMSs are able to support different types of databases by providing different internal and external levels of organization. The internal level is focused on 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 data models. It also could include virtual tables that are calculated with generic data to enhance the performance.

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