How can I use a database with IOS swift?

Hi Experts!

I am brand new to IOS dev, and I need some guidance.

My test app should have two sides:

Admin
Teacher

The app will track all teachers and their rate. Teachers will be able to see how many hours they worked and how much they should get paid, etc.. (there's more, but this is a start)

The Admin will approve each student's payment, etc..

I need to know:
           Should I be using db for this?
           Is core data the same thing?
           what is the mechanism for handling an Admin Screen vs User screen. I don't want the teachers to even see an admin option.

Thank  you very much!
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MontoyaProcess Improvement MgrAsked:
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darbid73Commented:
Should I be using db for this?
This is a very common question.  The answer is, It Depends on the size and extent of use of the data.  My guess in your case is YES.

Is core data the same thing?
Yes and No.  Core Data is an extensive set of functions that you can use to create, save, get and delete data, but Core Data does not actually do the saving and the type of storage can vary.

By way of example when you set up Core Data you can have a SQlite database being used or a simple text file.  Both save the data and you do not have to worry about which one you use as you only talk with Core Date.  You could if you wanted to have a simple text file and save all the data yourself and then read the data again. You could also do this with SQlite, but core data is alot easier and takes alot of the hard coding away.
(Generally if you only have a small amount of data then the text type is ok.  Once you get big then SQlite is suggested.)

what is the mechanism for handling an Admin Screen vs User screen. I don't want the teachers to even see an admin option.
When the app first starts you would need to establish through authorization what kind of person is currently using the app.  If they identify themselves as admin then you would allow the screen to be shown or you would show some button or something so this screen could be called.
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