Database Management Website

Hi,

I want to create a database management system, but i am new to wordpress, please anyone spare your time to show me a video link or steps to add record (item) in database, modify, delete and retrieve. I want to create a website that can record user input (like forms user will fill up and save it in database)

I am installing a WordPress latest version on my pc with Xampp server (as i have seen in youtube tutorial videos) I get the hang of creating and designing simple website but i the plugins i know were very limit.

Please anyone help.