Databases

A database is a collection of data that has been organized to make it simple to manage and update. Data records or files containing information, including sales transactions, customer information, financial data, and product information, are often aggregated and stored in computer databases.

Any type of data can be stored, maintained, and accessed using databases. They gather data on individuals, locations, or objects. It is gathered in one location so that it can be seen and examined. You might think of databases as a well-organized collection of data.

Categories of databases: SQL, NoSQL, Data warehouses.