Type of views-data control, Database Management System

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Type of views:

Simple views and Difficult Views

Feature	Simple Views	Complex Views
Number of tables	One	One or more
Contain Functions	No	Yes
Contain groups of data	No	Yes
Data Manipulation	IS allowed	Not always

Let us look into some of the examples. To see all the details about existing views in

Oracle:

SELECT* FROM USER_VIEWS;

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