Can anyone tell what is the difference between this two?
Hello @5d970acbb8c78
hope you are asking for a product attribute.
Both are same but some time when we install module we need to add attribute into product level so most developers adding into install data, so when somebody install module it will create automatically.
Another thing you can defined the source model and backend for attribute while creating using module or programmable
Hope it will help you.
@5d970acbb8c78 The basic difference is when you create the attribute programmatically you can provide the backend and source model.
Also when multiple developers are working on a project at that time we generally create it programmatically otherwise all the developers have to create it manually.
Thanks