What is a view, and why use it

Question

Jignesh Kumar · Answer

Hello Kiran, I can give a brief overview of a view in SQL Server. A view in SQL Server is a saved query that presents data from one or more tables as a virtual table. Why use it: To simplify complex queries, improve security by restricting column/table access, and provide a consistent, reusable data structure.

Sandhiya Priya · Answer

Answer: A view in SQL Server is a virtual table whose contents are defined by a SQL query. It doesn’t store the data itself — it stores the query definition — and when you select from the view, SQL Server runs that query to produce results. Syntax Example: CREATE VIEW ActiveEmployees AS SELECT EmployeeID, Name, Department FROM Employees WHERE Status = 'Active'; Now you can query it like a table: SELECT * FROM ActiveEmployees; Why Use a View? Simplifies Complex Queries You can store a complex SELECT statement in a view, so you don’t need to rewrite it every time. Security & Access Control You can give users access to specific columns/rows through the view without exposing the entire table. Data Abstraction Users see the view as a table, without needing to know the underlying schema changes. Consistency Ensures everyone is working with the same logic and filters in their queries. Code Reusability Reuse the same query definition in multiple places without duplication. Notes: Views don’t store data (unless you create an Indexed View ). Any changes to the underlying tables will be reflected in the view results. In short: A view is like a saved query that behaves like a table. We use it for simplicity, security, reusability, and consistency in database operations.

Cynthia Sathuragiri · Answer

A view is like a shortcut to get specific data from your database without writing the same query again and again. You often need a list of active employees in the IT department. Instead of writing SELECT EmpID, Name, Salary FROM Employees WHERE Department = 'IT' AND IsActive = 1; every time, you can create a view: CREATE VIEW vw_ITActiveEmployees AS SELECT EmpID, Name, Salary FROM Employees WHERE Department = 'IT' AND IsActive = 1; Now, to get that list, you just write SELECT * FROM vw_ITActiveEmployees;

What is a view, and why use it

What is a view, and why use it

Answers (3)