Create a View in Oracle

A view in Oracle is a virtual table that represents data from one or more tables. It can be used to simplify complex data queries, aggregate data, and enforce data security. To create a view in Oracle, use the following syntax:

CREATE VIEW view_name AS
SELECT column1, column2, ...
FROM table_name
WHERE condition;

Example:

CREATE VIEW customer_view AS
SELECT customer_id, first_name, last_name
FROM customers
WHERE status = 'active';

Note:

• The view name must be unique within the database.
• The SELECT statement should define the columns and data to be included in the view.
• The WHERE clause is optional and can be used to filter the data in the view.

Once the view is created, you can query the view just like a regular table using the view name. To update the view, you will need to use an INSTEAD OF trigger.