RESTful API

Routers can be created according to REST principles such as get, post, put, delete etc.. 

GET  =>  get request to retrieve data from database or data store(An array).POST  =>  post request to insert data to database or data store(An array).PUT  =>  put request to update the data in database or data store(An array).DELETE  =>  delete request to delete data in database or data store(An array).

Creation of routers.

In this scenario I have created a schema call users using mongoose. 

using mongoose the created users model is retrieved.

GET request 

using the keyword  "get"  the data can be retrieved.

 retrieving all the users in the database.

By giving a parameter in the url we can get information according to the given subject.

 user is retrieved according to the _id.

POST request 

using the keyword  "post"  the data can be inserted.

users  are inserted to the database.

PUT request 

using the keyword  "putt"  the data can be updated.

 user is updated according to the _id.

DELETE request 

using the keyword  "delete"  the data can be deleted.

user is deleted according to the _id.