See Also See Also For more information on the topics covered in this page, see the following resources: Defining and Using Classes describes how to define classes and class members in InterSystems IRIS. Class Definition Reference provides reference information for the compiler keywords that you use in class definitions. Using InterSystems SQL describes how to use InterSystems SQL and where you can use it. InterSystems SQL Reference provides reference information on InterSystems SQL. Using Globals provides details on how InterSystems IRIS stores persistent objects in globals. The InterSystems Class Reference has information on all non-internal classes provided by InterSystems IRIS.