Library is a fast growing entity in the Era of 21st Century. The ancient methods of maintaining it are no longer dynamic and efficient. For expeditious retrieval and dissemination of information and better service for the clientele, application of modern techniques has become absolutely indispensable. A properly computerized library will help its users with quick and prompt services. Library automation refers to mechanization of library housekeeping operations predominantly by computerization. Library automation or Integrated Library System (ILS) is an enterprise resource planning systems for a library, used to tracks items owned, order made, bills paid etc. This helps to keep the records of whole transactions of the books available in the library. A library management system (LMS) is used to track items owned, orders made, bills paid, and patrons who have borrowed. This book provides practical directions for replacing library automated systems. This book presents a new hierarchical heterogeneous of parallel computing model which is based on the method library as well as its management system