With this App you don't need  internet connection to read about Sql concept. 
This tutorial will give anyone who is interested in learning SQL all he need to become expert in sql , 
If you are student who is preparing for exams about Database or programmer how  looking for programming job, this app is maid for you 
Currently, we are covering following all this topics:
   SQL - Overview 
   SQL - RDBMS Concepts  
   SQL - RDBMS Database   
   SQL - Syntax
   SQL - Data types 
   SQL - Operators
   SQL - Expressions  
   SQL - CREATE Database 
   SQL - Drop or DELETE Database 
   SQL - SELECT Database,USE Statement
   SQL - CREATE Table
   SQL - DROP or DELETE Table 
   SQL - INSERT Query 
   SQL - SELECT Query 
   SQL - WHERE Clause
   SQL - AND and OR Conjuctive Operators
   SQL - UPDATE Quer
   SQL - DELETE Query 
   SQL - LIKE Clause  
   SQL - TOP,LIMIT or ROWNUM Clause
   SQL - ORDER BY Clause 
   SQL - Group By   
   SQL - Distinct Keyword   
   SQL - SORTING Results   
   SQL - Constraints   
   SQL - Using Joins   
   SQL - UNIONS Clause   
   SQL - NULL Value   
   SQL - Alias Syntax   
   SQL - Indexes   
   SQL - ALTER TABLE Command   
   SQL - TRUNCATE TABLE Command  
   SQL - Using Views   
   SQL - Having Clause   
   SQL - Transactions   
   SQL - Wildcard Operators   
   SQL - Date Functions   
   SQL - Temporary Tables  
   SQL - Clone Tables   
   SQL - Sub Queries   
   SQL - Using Sequences   
   SQL - Handling Duplicates  
   SQL - Injection