jquery - Datatables Data Method -

I have recently created a datalet that is pulling data from .txt file with AJAX. Although I am quite new to AJX, Datlet etc. And I think that using a .txt file or using internal data is probably not the best practice.
I am curious to know which other methods can be used to make this method even more effective, because this .txt file is getting bigger, and is not the optimal way of adding dates. I have seen the use of SQL, but it is not sure how you can get the data within a SQL table, and then add the dataset.

This is not my area of ​​expertise, but I want to expand my skills.

The code, by dragging the code from .txt to the script.

  $ (document) .ready (function () {var table = $ ('# dt_example') .Datatale ({dom: 'c & lt; "clear"> lfrtip " "Default.content": ''}, {"class_name": "description-control", "sequential": incorrect, "data": "ajax": "objects.txt", "column" {"Data": "project"}, {"data": "project"}, {"data": "status"}, {"data": "contractor"}, {"data": "section"}, Order ": [[1, 'ACC']],});  

});