Microsoft SQL Server 2005 Notification Services

Chapter 18. User-Defined Matching Logic in SQL-NS Applications

IN THIS CHAPTER

• Overview of User-Defined Matching Logic

• Building the Music Store Application with User-Defined Matching Logic

At the center of every SQL-NS application is the core logic that produces notifications by matching events with subscriptions. In all the applications presented so far, this logic is coded in match rules—T-SQL statements that join views of the events and subscriptions and then select only those rows that adhere to some matching criteria. In these match rules, the matching logic is fixed at development time. The end users of the application (its subscribers) can only specify parameters to the developer-defined matching logic; they cannot change the logic ...