COM + Programming with Visual Basic : The Authoritative Solution

This book is designed to get the reader started quickly creating business applications with COM+. The five parts of the book encompass Understanding COM+ Applications, Data Services Layer, Business Services Layer, User Services Layer, and the final project.In the last section of the book, readers will put all that they learned in the previous chapters to work by developing the PubsOnLine.com application. This application is intended as a complete learning application that uses many of the features presented in the book. COM+ with Visual Basic offers comprehensive component functionality, simple but powerful role-based security, access to popular databases, message queuing products and mainframe-based applications, and includes performance-enhancing features such as database connection pooling.COM+ components provide transactional support just like their Microsoft Transaction Server predecessors. However, COM+ introduces the concept of automatic transactions. Automatic transactions allow a component to participate in a transaction and vote for the success or failure of a transaction without any special coding.Of the new component services provided by COM+, event support is one of the most useful to Visual Basic programmers. COM+ events form a mechanism for enabling one COM+ component to receive events fired by another.This book is designed to get the reader started quickly creating business applications with COM+. The five parts of the book encompass Understanding COM+ Applications, Data Services Layer, Business Services Layer, User Services Layer, and the final project.In the last section of the book, readers will put all that they learned in the previous chapters to work by developing the PubsOnLine.com application. This application is intended as a complete learning application that uses many of the features presented in the book. This book is designed to get the reader started quickly creating business applications with COM+. The five parts of the book encompass Understanding COM+ Applications, Data Services Layer, Business Services Layer, User Services Layer, and the final project. In the last section of the book, readers will put all that they learned in the previous chapters to work by developing the PubsOnLine.com application. This application is intended as a complete learning application that uses many of the features presented in the book.