The book provides an in-depth tutorial on building and using assemblies. It will focus on building assemblies in C# code, but will provide the equivalent VB.NET code in the code download. Alongside this tutorial comes a detailed examination of exactly when assemblies should and should not be used. Assemblies are not a complete replacement for T-SQL stored procedures and triggers, but are enhancements, to be used at the right place at the right time.  After reading this book, the reader will be able to build robust, useful and intelligent assemblies that are safe to execute and secure to the organization.