Release 10.1A: OpenEdge Development:
Progress 4GL Reference

Data-relation object handle

A handle to a data-relation object. A data-relation object defines one relation between a pair of parent and child buffers in a ProDataSet object that have a one-to-one or one-to-many parent-child relationship. A data-relation object identifies the parent and child buffers, and the fields in each buffer that define the primary and foreign key fields of the relation.

A data-relation object can be static or dynamic. A static data-relation object is one you define at compile time as part of the DEFINE DATASET statement using the data-relation option. A dynamic data-relation object is one you create at run time for a dynamic ProDataSet object using the ADD-RELATION( ) method. Use this handle to access the data-relation object’s attributes.

Note: Does not apply to SpeedScript programming.

Syntax

data-relation-handle [ :attribute ]

data-relation-handle

A handle variable that references a data-relation object.

attribute

An attribute of the data-relation object.

Attributes

ACTIVE attribute	ADM-DATA attribute	CHILD-BUFFER attribute
HANDLE attribute	INSTANTIATING-PROCEDURE attribute	NAME attribute
NESTED attribute	PARENT-BUFFER attribute	PRIVATE-DATA attribute
QUERY attribute	RELATION-FIELDS attribute	REPOSITION attribute
TYPE attribute	WHERE-STRING attribute

Notes

You cannot define multiple data-relation objects for the same pair of parent and child buffers.
You cannot delete a data-relation object. When the ProDataSet object is deleted or cleared, the data-relation objects are automatically deleted.

See also

ADD-RELATION( ) method, DEFINE DATASET statement