A database is a collection of related records/files, which are linked together for easier access. Databases are generally classified by their content, such as text, numeric, image... Databases have become the most common form of storage today for multiuser applications.
There are many types of databases, such as operational databases, which stores data for organizations, document-oriented databases, which are designed to work with document-oriented applications, and real-time databases which handles information that may or may not be constantly changing. The relational model is the most commonly used database type, it uses tables to show information, making it easier to use and read. Excel is a type of a relational database.
One benefit to using databases is that it has the capacity to be easily replicated. In other words, when something happens to the database, it can usually make an exact copy of what is happening, in real time, and save it somewhere else. This is useful in things such as e-commerce, because it creates a virtual receipt.
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