CRUD

Status Codes Based On REST Methods

1. In your own words, describe what each group of status code represents:
   • 100’s = Informational status codes that inform the client that the header portion of the request has been received but not processed.
   • 200’s = The request from the client was accepted.
   • 300’s = The resource that is requested, is not available.
   • 400’s = Client errors. Causes: timeouts, wrong URI, missing authentication, etc.
   • 500’s = Server errors. Indicates a problem with an overwhelmed server.
2. What is status code ‘202’?
   • 202 Accepted response status code indicates that the request has been accepted for processing,
     but the processing has not been completed; in fact, processing may not have started yet.
3. What is a status code 308?
   • The resource requested has been definitively moved to the URL given by the Location headers.
4. What code would you use if an update didn’t return data to a client?
   • 404
5. What code would you use if a resource used to exist but no longer does?
   • 404
6. What is the ‘Forbidden’ status code?
   • 403
7. Why do we need to pull our MongoDB database string out of our server and put it into our .env?
   • So that your .env file has a reference to pull data from?
8. What is middleware?
   • database middleware, application server middleware, message-oriented middleware,
     web middleware, and transaction-processing monitors.
9. What does app.use(express.json()) do?
   • It parses incoming JSON requests and puts the parsed data in request. body
10. What does the /:id mean in a route?
    • it is an id for the parent file?
11. What is the difference between PUT and PATCH?
    • PUT is a method of modifying resource where the client sends data that updates the entire resource.
      PATCH is a method of modifying resources where the client sends partial data that is to be
      updated without modifying the entire data.
12. How do you make a default value in a schema?
    • const schema = new Schema({
      name: String,
      description: { type: String, default: ‘’ }
      });
13. What does a 500 error status code mean?
    • Internal Server Error
14. What is the difference between a status 200 and a status 201?
    • 201 was received and understood and is being processed.
    • 201 status code indicates that a request was successful and as a result, a resource has been created