full emberjs database driven website

Hi I have warm up myself with ember.js and I am a ASP.NET Web developer. by reading more and more about ember.js I found that I can build a page with MVC pattern in javascript.

Seems foolish question but anyway is it logical to this :

1)Create a aspx page which contains some methods like this :

//Shop.aspx
[WebMethod]
public static object GetCustomers(){
 var db = new entities();
 return from c in db.Custmers select c;
}
[WebMethod]
public static object AddCustomer(string fullname,string phone){
 var db = new entities();
 Customer c = new Customer(fullname,phone);
 db.Customers.Add(c);
 db.SubmitChanges();
}

2) Now I will create a app.js and by ember.js I will do something like this:

 //for example : 
 //define new controller to get Customers from server aspx page;
 //define new controller to save a customer to server;

3) post my html page with ember libs near the aspx page on server

4) share my website.

So with ember js I had show my total database tables in Ember.Model , so anyone can understand my database scheme. and Hackers can see my web methods. can they call my web methods ? if the can they had hacked me.

At last but not least , does this way of programming safe ?

thanks in advance.