Structure data type for application programs
Use the Add or Edit Fields wizard to define the structures that are used by your application programs.
A structure is a fixed set of related data elements. Unlike an array, the elements of a structure do not repeat.
Specifying a data type of STRUCT defines a field as a structure to IMS™. The elements of a structure are fields that specify the structure as a parent. A structure can contain an array.
The length of a structure is automatically calculated based on the length of the subfields that are a part of the structure.
You must define an alias (EXTERNALNAME) on a structure. Dynamic arrays and any structures that contain dynamic arrays are not searchable by IMS and therefore cannot be included in an SSA.