What is Ajax?

Ans. Ajax is a set of web development techniques using many web technologies on the client-side to create asynchronous web applications. With Ajax, web applications can send and retrieve data from a server asynchronously without interfering with the display and behaviour of the existing page.


Meaning of data loading / fatching?

Data loading or fatching is the method of getting data from database and you can use this data for different purposes. Like calculation, display in html formats. 


Step's to load data from databases using Ajax and php.

Here we are using a simple DB , a server side php file and a client side interface file.

Step 1: First of all work , you have to required a database.

Here we are using .....database

Sql File link to download


Step 2: second ,  you need a user interface file in html language.

Step 3: Third,  you need a server side page. That have following code..