Difference between the view and the materialized view

Hi all

Can someone tell me exactly the difference between the view and materialized views?

Hello

View:-this is a virtual table means table is there, but in fact is not there...
see how to create a view...

 create or replace view aaa as select * from emp; 

Now, when we choose the AAA, he will show me all the data that would be returned by running a query "Select * from emp"... Thus, all data will come from table iteself.
View in itself is nothing but just a Sql statement that is used to create the view, in this case definition is "select * from emp.
Any update in the database table Emp which is in our case, would automatically result in the view...
Any changes (all dml) will actually update the base table (conditions apply *)

Now the materialized view:-this is the same as except that it is not a virtual table... This will be created separately and it will acutally hold the result of the query that is used to create it. Any subsequent changes in the base table only will be included in the opinion of M M view is refreshed...

Tags: Database

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