Database Management Basics

קריאה מהנה

Database management is the method for managing information that supports an organization's business operations. It includes data storage and distribution to users and applications and then modifying it if necessary and monitoring changes to the data and preventing it from getting corrupted due to unexpected failure. It's a component of a company's informational infrastructure that supports decision-making and growth for the business as well as compliance with laws like the GDPR and the California Consumer Privacy Act.

In the 1960s, Charles Bachman and IBM among others developed the first database systems. They developed into information management systems (IMS) which allowed large amounts of data to be stored and retrieved for a variety of reasons. From calculating inventory to aiding complicated financial accounting functions, and human resource functions.

A database is a collection of tables that store data according to an established pattern, such as one-to-many relationships. It makes use of primary keys to identify records and allow cross-references between tables. Each table is comprised of a variety of fields, also known as attributes, which provide information about the data entities. Relational models, which were developed by E. F. “TedCodd Codd in the 1970s at IBM and IBM, are among the most widely used type of database currently. This model is based on normalizing data to make it easier to use. It also makes it easier to update data, avoiding the need to update various databases.

The majority of DBMSs support a variety of databases by offering different internal and external levels of organization. The internal level is focused on costs, scalability and other operational issues, like the physical layout of the database. The external level is the representation of the database in user interfaces and applications. It may include a mix of different external views (based on different data models) and may also include virtual tables that are constructed from generic data to improve performance.

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