How nodeJs connect to database and fetch data under the hood?

Question

Hey guys i'm from php background and i'm trying to learn nodeJs currently but i'm bit confused about fetching data from database .

Problem 1 : How does NodeJs communicate with Database under the hood ?

Problem 2: Why do we need to make REST API in order to do backend stuff (Fetch data ,delete , add data) ? can't we do it like the way we do it in php -> connect to the database and do our backend stuff (Fetch data ,delete , add data).

Yes i know what API is and how it works .

I have read this answers : answer but this does not have what i'm looking for .

sorry if that question looks dumb :)

Any help would be helpful Thanks

P1: Like php way. P2: You don’t need rest api, you can do it like when you play with php. — hoangdv, Mar 26 '20 at 15:48
@hoangdv Like php way ? but nodejs is not a server side language than how ? — Ajay, Mar 26 '20 at 16:08

score 0 · Answer 1 · answered Mar 26 '20 at 16:07

0

I don't really know what you expect from the first part so I'll try to answer the second one.

You don't need to do a RESTful API if you don't want to with NodeJs. It's just a good way to structure your API and make it as easy to use as possible.

The NodeJs API, which is running on server side, offers end-points to other applications to access your data. It can just be an Interface between your database and other apps like your React/Angular front, or other APIs for exemple.

You can also create a NodeJs app like you would with php doing everything from serving Html to directly communicating with the database.

answered Mar 26 '20 at 16:07

Reda.a

26
2

my question was how nodejs do it under the hood since it is not server side language , – Ajay Mar 26 '20 at 16:17
Node is a JavaScript execution environment, not a language, that is used server side not client side. Browsers have their own JavaScript environnement. – Reda.a Mar 27 '20 at 09:10
If you want to read more about it there is a good article that is more complete and might answer your question more in depth [here](https://www.freecodecamp.org/news/the-definitive-node-js-handbook-6912378afc6e/) – Reda.a Mar 27 '20 at 09:16

score -1 · Answer 2 · answered Mar 26 '20 at 15:58

-1

Node .js runs on the client side, in the user's browser. But the database is on the server.

The two sides communicate by means of AJAX, which can be referred-to as a "remote procedure call" mechanism: the server receives the request, prepares the result, encodes them (usually) as JSON, and sends the results back to the client.

answered Mar 26 '20 at 15:58

Mike Robinson

8,490
5
28
41

thanks for answer but nodeJs is not a server side language than how it do it under the hood ? – Ajay Mar 26 '20 at 16:11

How nodeJs connect to database and fetch data under the hood?

2 Answers2