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Junior — Middle

Can you explain what is meant by view in the context of a database?

sobes.tech AI

Answer from AI

In the context of databases, a view is a virtual table that is generated based on the result of a query on one or more tables. It does not store data physically but displays data dynamically when accessed.

For example, if there are Employees and Departments tables, you can create a view that shows employees along with their department names:

CREATE VIEW EmployeeDepartment AS
SELECT e.Name, d.DepartmentName
FROM Employees e
JOIN Departments d ON e.DepartmentId = d.Id;

Views simplify complex queries, provide data security (by showing only necessary columns), and improve code readability.