the osi 7 layer model code example
Example: application layers
There are 3 layers
Front End:
Presentation layer
-Html, css, javascript codes for human eye
Back End:
Data Layer
Relational Database =
-Tables are structured related to each other
-Each specific type of domain data is strored
it's own table
Non-Relational Database =
-There is no relation at all between tables
-Mostly key+value pair : like jSon
Business Logic Layer:
This is where backend code is written
and it can be exposed as rest api.
We can access over the internet