Requirements containers
The ReqIF specification provides two different types of containers to organize requirements objects:
SPEC-GROUP
An unordered list of requirements. Its primary duty is to provide support for grouping of traces in RELATION-GROUPS.
SPEC-HIERARCHY
A hierarchical container for requirements. The list of children for a requirement is an ordered list.
Figure 118. Requirement containers
The Windchill Requirements Connetcor serializes a single SPEC-GROUP and a single hierarchy in a single file. This file is called a document and is used throughout the Windchill Requirements Connetcor configurations as an exchange unit.
This document organization ensures that exchanges of any size can be handled by the Windchill Requirements Connetcor. However, a major drawback is that only outgoing links can be transported with SPEC-GROUPs.
Figure 119. An Windchill Requirements Connector document
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