Modifying Action Diagrams › Understanding Contexts › Database Contexts › ELM

ELM

The ELM context contains the fields defined for the last-accessed element of a specified array. This context is valid only in the *CVTVAR built-in function and may be specified for either the input or output parameter.

Since a single element of an array is equivalent to a data structure, you can use the ELM context

• To decompose a field into a structure. A move of an element of an array to a field constitutes a move of the array’s structure to the field.
• To group a set of fields into a single field.

Note: You must define a key for an array even if the array holds a single element.

Following is more information on these two usages.