Using Caché Multi-Dimensional Storage - InterSystems ...

3
Using Multidimensional Storage
(Globals)
This chapter describes the various operations you can perform using multidimensional storage
(global variables).
3.1 Storing Data in Globals
Storing data in global nodes is simple: you treat a global as you would any other variable.
The difference is that operations on globals are automatically written to the database.
3.1.1 Creating Globals
There is no setup work required to create a new global; simply setting data into a global
implicitly creates a new global structure. You can create a global (or a global subscript) and
place data in it with a single operation, or you can create a global (or subscript) and leave it
empty by setting it to the null string. In Caché ObjectScript, these operations are done using
the SET command.
The following examples define a global named Color (if one does not already exist) and
associate the value “Red” with it. If a global already exists with the name Color, then these
examples modify it to contain the new information.
In Caché Basic:
^Color = "Red"
Using Caché Multi-Dimensional Storage 15