Views

Views are representations of information designed for specific purposes in computing and data systems. They provide tailored perspectives on data, allowing different users or components to focus on relevant aspects without altering the underlying data. The term is used across databases, software architecture, and analytics to describe how data is presented or accessed.

In database systems, a view is a logical table defined by a query over one or more base tables. It does not store data itself, but derives rows and columns from underlying tables when queried. Views can simplify complex operations, enforce security by restricting access, and can be materialized to improve performance.

In software architecture, a view is the presentation layer in patterns such as Model-View-Controller. Views render interfaces, display data from the model, and react to changes. They are typically independent of business logic, enabling modular design, easier testing, and reuse of interface components.

In analytics and media, a view commonly refers to a single loading of a resource, such as a web page or video. Views are contrasted with unique views or sessions, impressions, and dwell time. Measurement strategies vary, affecting metrics, billing, and privacy considerations.