This book is an introduction to Enterprise computing. This book covers the fundamental concepts of Enterprise system and it gives a wide range of ideas about the concepts of JDBC, RMI, CORBA, DCOM, XML, servelet, JSP and EJB This book contains five units. UNIT 1 contains a brief description of Enterprise system and JDBC.This units give idea about how to write the JDBC program. UNIT 2 Describes the Distributed Enterprise Communications Basis. It elaborates the RMI, CORBA program. This unit also discusses the difference and similarities between RMI, CORBA and DCOM. UNIT 3 Discuss the different types of service for Distributed system. UNIT 4 Discuss Web Browsers and Web Servers in Enterprise. This unit gives idea about how to write the Web Programming, XML, Java Servlets, Java Server pages. UNIT V gives the basic concepts regarding the EJB, Enterprise Application Integration and Frame work.