Through this chapter, you learned the essential distributed database systems and their architecture. You also learned how to setup the distributed database and a comparison of the techniques. Further, you learned distributed database environments and setup methodologies, replication, distributed DBMS architecture, and XA transactions programming in detail. We finished this chapter with an understanding of the Java Support for the database connectivity (JDBC) and Java transaction API (JTA) support for the distributed transactions in multiple database connections.

In the next chapter, you will learn about distributed computing in Cloud environments and demonstrate the Java support for such distributed models in detail.