How to connect my Application to SQLite Database?

Hi all,

Am new to Unity development. My simple question is how to connect to database in Unity. I followed http://answers.unity3d.com/questions/743400/database-sqlite-setup-for-unity.html this page and successfully connected to database. But I had been thrown out by an error "SqliteSyntaxException: no such table". Here goes my code and since am new to development my code is not in proper arrangement.

Excuse for Typos / grammar mistake. Thanks in advance.

 using UnityEngine; 
 using System.Collections.Generic;
 using System;
 using System.Data;
 using System.Data.SqlClient;
 using Mono.Data.SqliteClient;
 
 public class Students : MonoBehaviour 
 { 
     
     //Variables
     
     string connectionString = "URI=file:Database.db";
     string commandString = "Select ID,Name from Stud";
     SqliteConnection Conn;
     SqliteCommand Command;

     void Start()
     {
         Display ();
     }
     
     void OnGUI () 
     { 
 
         //GUI Code goes here
     }
 
     void Display()
     {
         Conn = new SqliteConnection (connectionString);
         try 
         {
             Conn.Open ();
             Command = new SqliteCommand (commandString, Conn);
                     SqliteDataReader DR = Command.ExecuteReader();
 
             while (DR.Read())
             {
                 int ID = DR.GetInt32(0);
                 string Name = DR.GetString(1);
 
                 Debug.Log("ID = " +ID+ "Name = "+Name);
             }
 
         }
         
         catch (NullReferenceException ex) 
         {
             print (ex);
         } 
         catch (ArgumentException ab)
         {
             print (ab);
         }
         
     }
 }

My Database name : Database Table Name : Stud Two fields : ID and Name.