As a part of our database optimization series, this article is related to creating materializing views in the database.
Before starting with a materialized view, let’s talk about database views.
What is a database view?
A database view is a stored set of queries, which gets executed whenever a view is called or evoked. Unlike the regular tables, the view doesn’t occupy any physical space in your hard disk but its schema and everything is stored in the system memory. It helps abstract away the underlying tables and makes it easier to work with.
They can also be called as pseudo tables.
Quoted from the PostgerSQL documentation.
Making liberal use of views is a key aspect of good SQL database design. Views allow you to encapsulate the details of the structure of your tables, which might change as your application evolves, behind consistent interfaces.
CREATE VIEW company_manager AS
SELECT id, name, email
Now to access all the managers
SELECT * FROM company_managers;
Making more use of views makes your DB design much cleaner, but here we are talking more about using Materializing views. As that would lead to the more direct performance boost.
So what is a Materialized view?
The materializing view was first introduced in oracle. But …