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Can you insert, update, or delete data through a view, and what conditions must be met for this to work? What is a schema bound view, and what specific benefit does the WITH SCHEMABINDING option provide? What is an indexed view, and how can it improve the performance of complex, frequently run queries? How do you use a view to help enforce a basic level of security by limiting which columns or rows different groups of users can see? How would you design a layered set of views to progressively simplify a complex data model for different types of users, such as analysts versus casual business users? What happens to the performance and correctness of a view if the underlying tables change significantly after the view was originally created?
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SQL Server › Views

What is a view in SQL Server, and what benefits does it provide?

Beginner

Answer

A view is a saved, named query that you can treat like a virtual table, letting you simplify complex queries by hiding their underlying complexity behind a simple name, restrict which columns or rows users can see for security purposes, and provide a consistent, reusable way to access commonly needed data combinations.
CREATE VIEW ActiveCustomers AS
SELECT CustomerId, Name, Email
FROM Customers
WHERE IsActive = 1;

SELECT * FROM ActiveCustomers;
Real-world example A company creates a view that only exposes active customers with their name and email, letting the reporting team easily query this filtered, simplified view without needing to understand or repeat the underlying filtering logic every time.

Common follow-ups: Does querying a view have a performance cost compared to querying the underlying tables directly?;Can a view include a join across multiple tables?

Data Types & Schema Design;SQL Server Security & Permissions
All 7 Views questions