In SQL databases, what is a view?

A view in SQL databases is defined as a virtual table created by a query. This means that a view does not store the data itself but rather provides a way to present data from one or more tables in a structured manner. When a view is queried, the underlying SQL query that defines the view is executed, fetching real-time data based on the current state of the underlying tables.

One of the primary advantages of using views is that they can simplify complex queries for users by encapsulating them in a more manageable form. Moreover, views can also enhance security by limiting users' access to specific rows and columns of data without giving them direct access to the tables themselves. Thus, views serve as a powerful tool in database design and management, allowing for flexible data representation and improved data security.