Which of the following describes a virtual table created from specific columns of one or more database tables?

A database view is a virtual table that presents data from one or more database tables, specifically focusing on certain columns or rows that meet particular criteria. It does not store data itself but rather provides a way to access data in a customized manner, allowing users to see only the information they need without altering the underlying data structure. This flexibility enhances security and simplifies data management, as views can encapsulate complex queries while providing a straightforward interface for users.

In contrast, a database trigger is a set of instructions that automatically execute in response to specific events on a particular table or view, rather than being a way to represent data. A data warehouse refers to a system used for reporting and data analysis, which is more about the storage and processing of large volumes of data from different sources, rather than serving as a virtual representation of table data. Lastly, a database schema defines the structure of a database, including the tables, columns, types, and relationships, but is not about presenting or accessing data directly like a view does.