Introduction

• Most modern systems are distributed, largely because of distributed nature of the users and the information that they bring together
• The need for scalability and robustness mandate a solution that was distributed across multiple machines
• This led to the adoption of a multi-tier architecture
• The multi-tier architecture separates the management of data from the business logic, which in turn is separated from the user interface handling
• It becomes easier to develop business components if the component model supports transactions, a concept from the database community that has been used for years to develop robust applications