Update README.md

Author: Urunov

README.md

@@ -2,8 +2,15 @@
 
 This provides Database implementation in the Spring Boot. Indeed, We should breifly inform here concept of Spring, Spring Boot, JDBC, JPA, H2.
 
-#Spring
-* The Spring Framework is an application framework and inversion of control container for the Java platform.
+Spring
+* The Spring Framework is an application framework and inversion of control container for the Java platform. Spring is HA (high avilability).
 
 Spring Boot
 * Most Spring Boot applications need minimal Spring configuration. Features. Create stand-alone Spring applications
+
+JPA
+* JPA (The Java Presistence API) = This module deals with enhanced support for JPA based data access layers.
+Simply explain JPA is rule of the interface. 
+
+ Ex: 
+   Class A, B .... Implmenet