We have found a very simple way to integrate authentication schemes of two applications. This will be useful in implementing Identity Management/Single Sign-on solutions. Merging authentication mechanisms for various applications have been a big enterprise challenge, and a full fledged industry exists to support this market.

Now we have a straight forward mechanism to handle this. Map the fields in authentication tables of two applications. Write a synchronization script in slave application that always fills the authentication table with user data in master application as soon as some user logs in slave application. Suspend the slave application authentication FRONT END totally, and two applications identity have been merged without making a single line of functionality code change in either application.