Explain the role and purpose of the View component in PostgreSQL.

In PostgreSQL, the View component is a virtual table formed based on the result of an SQL query. A View does not physically store data but only saves the query executed when accessed.

Role of View:

• Simplifies complex queries by providing a convenient interface for reuse.
• Enhances security — access to certain columns or rows can be restricted, providing access only to the View.
• Abstracts the database structure, allowing internal tables to be changed without affecting client code.

Example of creating a View:

CREATE VIEW active_users AS
SELECT id, name, email FROM users WHERE status = 'active';

Now, active_users can be accessed as a regular table.