Manage globals programmatically (import, export, get size, set collation, configure mappings, and so on).
InterSystems IRIS® data platform stores all data in its databases in globals. A single set of rules governs the names of globals and the names of their subscripts (that is, different languages do not have different rules). See “Introduction to Globals” and see the book Using Globals.
You can define global mappings so that you can access data in a non-default location; see “Configuring Namespaces” in the chapter “Configuring InterSystems IRIS” in the System Administration Guide. Typically you do this within the Management Portal.
The Management Portal also provides options for examining and managing globals. See “Managing Globals” in Using Globals.
The special variable $SYSTEM is bound to the %SYSTEM package. This means that instead of ##class(%SYSTEM.class).method(), you can use $SYSTEM.class.method().