company relation

Companies stand in relation to one another, and this link records one such relation, such as a subsidiary to its parent or a successor to the firm it absorbed.

The link has a direction. It is stored on one company and points at the other, which is what tells parent and subsidiary apart rather than any wording in the row.

It describes the firms, not their work. A company that designed or built a structure is attached to that structure through its role there, which is a separate connection entirely.